How to Format Resume Dates When You Know the Year but Not the Month

Use only the date precision you can support, and use the same format throughout your resume. If you know a job or activity happened in a particular year but cannot verify the month, show the year alone rather than guessing. The exception is an application that requires month and year: check reliable records and follow its instructions.

The difficult part is not choosing punctuation. It is deciding how much certainty the date should claim. Writing May 2021 says more than writing 2021. If May is a guess, the extra detail makes the resume less accurate, not more professional.

For a general resume, year-only dates can be a reasonable fallback when you genuinely remember the year but not the month. They also hide some chronology: a role from January to December and a role from December to January can look similar if both are marked only with years. So use year-only dates deliberately, and check whether the application asks for more detail before you submit.

This guide gives you a way to choose the right precision for jobs, education, and activities; verify dates without turning a hunch into a fact; and describe a genuine gap without editing the timeline to make it look cleaner. The examples are hypothetical. They are formats to adapt, not claims about a real candidate.

The safest default is the most precise date you can verify

Write a resume date at the finest level you can stand behind. If you know the month and year, use month and year. If you know only the year, use the year. Do not assign a plausible month just because a form or template looks neater with one.

That rule is a practical recommendation, not a universal convention imposed on every resume. Employers, institutions, countries, and application systems can set their own requirements. Harvard's resume guide advises applicants to keep formatting consistent and avoid unexplained information gaps, but it does not prescribe one date format for every situation. Federal application guidance is more specific: USAJOBS tells applicants to include employment start and end dates with month and year, while a particular vacancy can spell out additional requirements. Read the instructions for the application you are completing, not only general resume advice. (Harvard College Guide to Creating a Strong Resume; USAJOBS resume guidance)

A date has two jobs. It places an experience in time, and it signals how much detail you know. Keep both jobs in view. A year-only date can be honest but less informative than a month-and-year date. A guessed month looks informative but gives the reader false precision.

Use this order of preference:

1. Follow explicit application instructions. If the application requires month and year, provide those details only after checking records or another reliable source. If the instructions request exact dates, follow that rule and verify the dates before entering them.
2. Use verified month and year when available. Mar 2022 – Oct 2023 is more informative than 2022 – 2023 when the months are known.
3. Use the year alone when that is all you can support. 2022 – 2023 does not pretend that you remember a month.
4. Do not add a month from memory that feels plausible but is unconfirmed. “Probably September” is a lead for research, not a resume date.

This leaves a real tradeoff. Greater precision helps readers understand sequence and duration, but only when it is accurate. Less precision protects accuracy, but can make a short role, overlap, or gap harder to interpret. Resolve the tradeoff by checking evidence first. If the requested precision remains unknown, choose the truthful representation allowed by the application, or ask the employer how to proceed.

Choose year-only or month/year with this decision table

Use the table as a decision aid, not as a rule that every resume must follow. The right answer depends first on the instructions and then on what you can verify.

The table's key distinction is between an unknown month and an unknown experience. If you clearly remember that a job occurred in 2022, the year is useful. If you cannot tell whether you worked there in 2021 or 2022, do not choose a year to complete the line. Find evidence first.

A second distinction matters: a resume and an application form are related documents, but they are not always interchangeable. A general resume may use year-only dates where you can support only the year. An online application may demand specific date fields. Do not copy a vague date into a mandatory precise field and treat the form as complete. Try the employer's instructions, your records, or the application's help contact. Keep the information consistent across documents once you have established it.

How to format year-only dates without implying more than you know

A year-only date should look like a year-only date. Keep it simple: 2021 – 2023 or 2021–2023. Use the same dash style and spacing throughout. Pick either four-digit years or another format only if the application specifically requires a different representation; four digits are easier to read without ambiguity.

For a role that is still active, write 2023 – Present only if that remains true when you send the resume. If the role ended, use its actual end year. Do not write Present as a way to avoid researching an end date. If you have left but cannot remember the month or year, the endpoint is still unknown and needs checking.

Consider a hypothetical candidate who remembers starting at a community theater in 2020 and leaving in 2022, but does not remember either month. A defensible line is:

Stage crew volunteer, Harbor Community Theater | 2020–2022

The line does not establish that the person served for three full years, or from January through December. It establishes only that the experience falls within those calendar years. If the length of service is important to a particular application, the candidate should verify the start and end months rather than let a reader infer a duration the candidate cannot support.

Do not force an awkward date format into the rest of a line. If the resume layout shows dates in a separate right-hand column, use the same place for each role. If dates appear after the organization, separate them consistently with a comma, vertical bar, or line break. The punctuation cannot fix an inaccurate date, but consistent placement makes accurate dates easier to scan.

Avoid these shortcuts:

• A month chosen to improve the appearance of a gap. A role beginning in September is not more accurate because it makes a timeline appear continuous.
• A date range that implies a duration you have not established. 2020–2022 is a calendar-year span; it does not establish 36 months of work.
• A footnote that overexplains a routine unknown. If the resume only needs to show a year, the year can stand on its own. Explain uncertainty when the missing detail affects a required qualification or an application field.
• Inconsistent precision without a reason. If most roles use months and years but one uses years only, check whether that difference reflects what you know. If so, consider whether your chosen presentation may confuse the reader; if it does, verify the remaining dates or use a consistent format that remains truthful.

Uniformity is useful, but accuracy comes first. Consistency does not mean inventing a month for every line. It means using a clear system and applying it honestly. Harvard recommends consistent formatting and warns against information gaps, but that is not a reason to conceal a real break or manufacture dates. (Harvard College Guide to Creating a Strong Resume)

How to verify a job start or end month

Start with sources that were created near the event and record the date directly. Do not begin by searching for a month that would make the resume read smoothly. Begin with the employer, record, or transaction most likely to contain the date.

Try these sources in order, adapting the list to your situation:

1. Employment records you already have. Look for an offer letter, contract, appointment notice, separation letter, personnel record, or service certificate. Confirm that the date marks the beginning or end of the role itself, not the date the document was issued.
2. Payroll and tax records. A first or final pay statement can narrow the period. A tax document may establish that income was reported in a year, but usually will not by itself prove the exact first or last month of employment. Do not treat a payment date as an employment start date without checking what it represents.
3. Work systems and correspondence. Search old email, onboarding messages, calendars, schedules, timesheets, or project records. A message about an interview is not proof that employment began that day. Look for an actual start, first shift, appointment, or final day.
4. The employer or an authorized former contact. Ask human resources, a former manager, or another official contact for the dates they can confirm. Request only the information you need. Keep any response with your private records; do not add unnecessary personal details to the resume.
5. A contemporaneous personal record. A calendar, diary, or archived message can support the date if it clearly identifies the event. Treat a remembered event as a clue, not a record, until you can connect it to the role.

For a hypothetical example, imagine you remember that a retail job started in 2019. An archived welcome email arrives in August, but it says orientation is scheduled for August 26. A first wage statement covers work beginning September 2. The correct resume start date depends on what the employer treats as the employment start date and what the application asks for. Orientation, first paid shift, contract effective date, and payroll period can differ. Check a record that defines the role's start, rather than choosing whichever date gives the cleanest timeline.

When records disagree, do not average the dates or pick the one that suits the resume. Identify what each record measures. A signed contract may show an effective date; a first shift may be later; a payroll entry may include a processing delay. If the distinction matters, ask the employer or explain the basis required by the form. If it does not matter for a general resume and you cannot resolve it, use the coarser date precision you can verify.

Federal employment is a clear example of why source and application matter. USAJOBS' general guidance asks for month and year for employment dates. Some vacancy announcements state additional requirements. The Office of Personnel Management also advises applicants in a suitability context to gather accurate employment and education history and to ensure resume information contains no inaccuracies. These are context-specific instructions, not a claim that every private-sector resume must include exact months or days. (USAJOBS resume guidance; OPM applicant tips)

How to format education when you know only the year

Education dates describe different events, so label the event clearly. Attendance dates, degree completion, expected graduation, and certification dates are not synonyms. A year-only date can be useful when it honestly identifies the event you mean.

For a completed degree, a simple entry might read:

North Coast University, Bachelor of Science in Biology | 2024

Here, 2024 should mean the completion year. If you attended for several years but did not complete a degree, do not present an attendance range in a way that suggests completion. Use a label such as Coursework in biology, 2022–2024 only if that description is accurate and useful. Do not list an expected completion year as a completed date.

For current study, identify the status and the expected date separately:

North Coast University, Bachelor of Science in Biology | Expected 2027

Use Expected only if the date is genuinely anticipated. If the application asks for a month and you do not know it, check the institution's student record or degree plan. Do not convert a general expectation into a guaranteed graduation month.

For a short course or certificate, the date might refer to completion, issue, or expiry. Use the date that matches the claim. If a credential is valid until a particular date, a completion year alone may not tell the reader whether it is current. Check the issuing body's certificate or account before saying that it is active. If the relevant date is unknown and the credential's current validity matters, verify it before listing it as current.

A transcript, student portal, diploma, certificate, or official institutional record can help establish an education date. A commencement ceremony date may not be the same as the degree conferral date. If an application asks when the degree was conferred, use the institution's record, not the date you attended a ceremony. If it asks when you attended, list attendance rather than substituting a completion date.

The same honesty rule applies when an education period overlaps with employment. Do not move either date to make the timeline look sequential if both activities took place at once. Overlap is not automatically a problem. A truthful timeline lets the reader see it; a fabricated date creates a different one.

How to date activities, projects, and volunteering

Use year-only dates for activities when the year is known and the month is not, provided that the experience is still relevant and the date helps the reader understand it. A school club, personal project, caregiving responsibility, community role, or seasonal activity does not need invented month-level detail to be described honestly.

A hypothetical line might read:

Volunteer tutor, Eastside Learning Center | 2021–2022

If the person remembers that the activity happened during two school years but cannot identify the months, the years may be the best available precision. If the activity was a single event in 2021, however, a range from 2021 to 2022 would imply a longer commitment than occurred. Use a single year for a one-year event or a short project when that is clearer.

For a project without a formal employer, decide what the date means. It could be the period when you worked on the project, the date of its release, the date you presented it, or the period a team operated. State the relevant event where it helps. For example, Research project, completed 2023 is different from Research project, 2022–2023. Do not make a project sound like ongoing work after it ended.

For volunteer service, distinguish a recurring role from a one-time contribution. 2022–2024 suggests activity across that span, but it does not prove continuous weekly participation. If the time commitment matters, describe it accurately in words, such as seasonal volunteer, 2022–2024, if seasonal work is true. Do not invent hours, frequency, or duration to compensate for a missing month.

For informal or self-directed work, use records that actually fit the activity. A project version history, dated portfolio entry, invoice, event program, meeting calendar, or correspondence can help. A webpage's current date may not establish when you started building it. A social media post announcing a finished project may prove a public announcement date, not the start date. Match the record to the claim.

If there is no reliable record, keep the scope modest. A year-only date is not a confession of carelessness. It is a limit on precision. What matters is that you do not present uncertain detail as certain, and that the rest of the entry makes the activity's nature and contribution clear without adding unsupported claims.

What year-only dates do to apparent gaps and overlaps

Year-only dates make timelines less exact. That is their main limitation. A reader cannot tell from 2021–2022 whether an experience ran from January 2021 through December 2022, lasted a few weeks across New Year's, or began and ended somewhere between those points. Do not rely on year-only dates to prove a particular duration.

They can also obscure a gap. Consider this hypothetical sequence:

These entries might have overlapped. They might also have been separated by several months. The year alone does not settle the question. If a job application asks about continuous employment, eligibility, or a minimum duration, year-only dates may not give it enough information. Retrieve the months and answer the specific question accurately.

The same principle applies in the other direction. Suppose an activity ended in February 2021 and a new job began in November 2021. A resume showing only 2021 for both can make the timeline look more continuous than it was. The dates may still be accurate as year labels, but they cannot establish that there was no gap. Do not claim continuity based on coarse date precision.

Harvard's guide recommends avoiding information gaps such as a missing summer. That advice supports reviewing the timeline so readers do not mistake an unexplained period for missing information. It does not instruct applicants to conceal breaks, and it does not justify inventing a start month. If a real gap needs context, address it truthfully in the relevant application or interview rather than changing employment dates. (Harvard College Guide to Creating a Strong Resume)

A date format is not a substitute for an explanation. If a period without listed work is relevant and likely to raise a question, decide whether a brief, factual description helps the particular application. You do not need to add private or unnecessary details. You also do not need to manufacture a role to fill the time. The objective is a timeline that is understandable and accurate, not one with no blank space.

When the application asks for more detail than you remember

Treat a required date field as a request for information, not permission to estimate. First, read the field label and instructions carefully. Does it ask for a month and year, a specific day, or simply a year? Does it define start date as the first day worked, appointment date, or another measure? Check the announcement, form help, or employer's instructions before deciding.

Then try to verify the date. Search appropriate employment or school records, and ask the relevant organization if needed. OPM advises applicants preparing for suitability review to gather employment history and education dates, and to make sure resume information is factual. The advice is especially relevant to that process; it reinforces a sound general practice but does not define every employer's form rules. (OPM applicant tips)

If the month remains unknown, do not invent one to get past the form. See whether the system accepts a year, offers an “unknown” or “approximate” option, or lets you explain the limitation. If it forces a month and offers no truthful option, contact the employer or application support for instructions. Save the response. Do not assume that selecting January, June, or December is harmless. An arbitrary default still communicates a date you do not know.

Some applications request finer precision because they use dates for a specific qualification or review. A USAJOBS vacancy may, for example, require month/year dates and may ask for additional information to establish experience. Guidance for certain federal applications also states that missing required information can leave an application insufficient. These requirements apply in their stated contexts. Do not assume that an example vacancy's rules apply to every job. Read the live announcement for the role you are applying to. (USAJOBS resume guidance; example USAJOBS vacancy instructions)

If you cannot get an answer before the deadline, make a documented, good-faith choice based on the application's instructions, and avoid claiming precision you do not possess. If the form cannot accept that, ask the employer how to represent an unknown month rather than submitting a made-up one. There is no general resume convention that overrides a specific application's required fields.

How to keep dates consistent across the resume and application

Consistency means that the same experience has the same underlying dates wherever you describe it. It does not mean that every document must use identical punctuation or the same visible level of detail. A resume might say 2022–2023 while a required application field includes verified months. That is compatible if both are accurate and the resume format is intentionally coarser. It is not compatible if the month on the form contradicts the year range on the resume.

Before you submit, compare each job, degree, and activity across the resume, application fields, profile, and any documents that repeat the timeline. Check the facts first, then the display:

• Does each start and end date refer to the same event in every document?
• Does Present still describe a current role or program?
• Does a degree date mean completion, conferral, or expected completion consistently?
• Are overlapping experiences real overlaps rather than date-entry errors?
• Have you used the same year-only or month/year style within each section, except where a verified difference explains the choice?
• Does any application ask for more precision than the resume provides?

A difference in display can be acceptable; a difference in fact needs attention. For example, 2022–2023 in the resume and Sep 2022 – Feb 2023 in an application are not contradictory. But 2022–2023 in one document and Jan 2021 – Dec 2023 in another may reflect a serious mismatch. Pause and establish the correct dates before you submit.

Keep a private date record for yourself if your work history is long or complex. It can be a simple list of organizations, titles, start and end dates, confidence level, and the record that supports each date. Mark uncertain months as uncertain. That record is for checking future applications; do not publish a confidence label or private supporting documents on the resume. Revisit it when new evidence becomes available.

If you revise a date after sending one application, check whether other active applications use the old version. Update only where the employer allows you to do so, and keep the factual record consistent. Do not silently change dates to suit a different job's wording. Tailoring should change emphasis and selection, not historical facts.

Common mistakes when the month is missing

The most common mistake is guessing a month because the resume looks unfinished without one. A close second is assuming that year-only dates always hide a gap or always look suspicious. Neither assumption is a sound basis for editing your history.

Guessing a likely month

A birthday, school term, holiday, first paycheck, or season can make one month feel likely. It is still a clue, not proof. Verify it before using it. If you cannot, keep the year or follow the application process for unknown dates.

Using January or December as a placeholder

These months are not neutral. Jan 2022 and Dec 2022 say the event happened in those months. Unless an official form explicitly tells you how to encode an unknown month, do not use a placeholder that looks like a fact.

Using a range that exaggerates continuity

2019–2021 does not establish that you worked for three years, full time, or without interruption. If the duration matters, recover the months and explain the work arrangement accurately. Do not imply full-time employment if a role was seasonal, part time, or sporadic.

Omitting a real experience to avoid date questions

Do not automatically remove a relevant role because one month is uncertain. If the year is known and the role adds useful evidence, a year-only date can preserve that information. But do not retain a low-value item just to fill a blank. Select entries for relevance, not for the appearance of a continuous timeline.

Adding explanation that raises more questions than it answers

A general resume does not need a note such as “Exact month unknown” after every year-only entry. If the format already communicates year-level dates, the note is often redundant. Explain the uncertainty only when a form asks for detail, the date affects a qualification, or a reader needs clarification to understand the experience.

Treating all dates as the same kind of date

A job's first paid day, contract effective date, orientation date, final shift, and separation date can differ. A course's attendance period and degree conferral date can differ too. Verify the event the application asks about. Do not substitute a nearby date merely because it is easier to find.

Copying an old resume without checking it

An earlier resume may contain a guessed month, a stale Present label, or a date copied from a rough draft. Reuse the factual parts only after you check them. A date repeated in several resumes is not independently verified just because it appears often.

A practical verification checklist before you submit

Use this checklist for any date that matters to the application. You do not need to investigate every minor activity to the same level. Focus effort on dates that affect a qualification, current status, sequence, or required field.

1. Read the exact instruction. Identify whether the employer asks for years, month/year, exact dates, attendance dates, or degree completion dates. Note any vacancy-specific directions.
2. Write down what you actually remember. Separate confirmed facts from estimates. “Worked there in 2021” is not the same as “started in March 2021.”
3. Find the best source for the event. Check the relevant employer or education record first. Use calendars, messages, pay documents, schedules, or project history as supporting evidence, and confirm what each record actually dates.
4. Resolve conflicts instead of picking a convenient answer. Compare what the records measure. Ask the organization when the application needs a definitive answer and the documents remain unclear.
5. Choose the supported precision. Use month/year only when the month is supported. If only the year is known and the application allows it, list the year.
6. Check whether the format obscures a material fact. If dates affect a qualification, continuous service, or duration, year-only dates may not be enough. Verify details or ask how to proceed.
7. Compare documents. Check the resume against every application field, profile, and supporting document that repeats the same history.
8. Review present-tense dates. Replace Present when a role or course has ended. Keep it only while it is current on the submission date.
9. Scan for accidental claims. Make sure dates do not imply full-time service, a completed degree, continuous participation, or a particular duration you cannot support.
10. Save your verified record. Keep the supporting information private so you can answer future applications consistently.

If a month is still unknown after these steps, do not keep searching indefinitely for the perfect resume convention. Use the truthful year-only format if allowed. If an application requires more, ask for its method for reporting an unknown date. That is a more defensible next move than converting uncertainty into a specific month.

Hypothetical edge cases and what to do

These examples show how the decision changes with the evidence and the application. They are hypothetical formats, not records of real candidates.

You remember the year of a short job, but not its months

You know you worked at a summer camp in 2021, but you cannot remember whether it began in June or July. The general resume can show 2021 if the position was contained within that year and the year is certain. If the application asks for month/year, check offer, schedule, pay, or employment records. Do not choose June because camps often begin in June.

You remember a role crossed two calendar years

You know a temporary role began in 2020 and ended in 2021, but the months are unclear. Use 2020–2021 on a general resume if the years are reliable and year-only dating is acceptable. Do not call it a two-year role; the span could have been brief. If a qualification depends on the length of service, find the months or ask how the employer wants an uncertain date reported.

You know the start month but not the end month

Suppose a job began in April 2022 and ended in 2023, with the exit month unknown. The start month is verified; the end month is not. You can either verify the endpoint or choose a date display that does not create a confusing mix of precision. For a general resume, 2022–2023 can be clearer if you are willing to use year-only dates consistently. For a form requiring month/year, keep searching for the end month and ask for guidance if records do not resolve it. Do not invent a matching month to make both sides look tidy.

You have two roles in the same year and cannot tell whether they overlapped

A resume shows 2023 for each job, but you cannot remember if one ended before the other began. Do not rearrange the entries to imply a sequence you cannot establish. Check pay statements, calendars, or employer records. If the roles genuinely overlapped, show the overlap. If exact order is not material and the application allows year-only dates, use the dates you know without claiming a sequence. If the form asks whether you worked concurrently, verify before answering.

You remember school years rather than calendar dates

You completed a program during the 2021–2022 academic year, but you do not know the conferral month. For a general education entry, verify the completion year from the institution if possible. Do not assume the spring semester ended in May or that graduation occurred on the ceremony date. If the application asks for a degree date, use the institution's record or ask its registrar which date it reports.

You started a role before your first paycheck

A contract was effective in October, but training and payroll began in November. The correct date depends on what the application asks for and how the employer defines employment start. Do not automatically use the pay date. Check your agreement or ask the former employer. If the general resume only needs a year and both events occurred in the same year, the distinction may not change the displayed date; preserve it in your private record for applications that ask for more.

A project began informally and ended at a public launch

You worked on a personal project at different times before releasing it in 2024. A launch date can verify the release, but not the project's full start date. Write Released 2024 if the release is the relevant milestone. Use a project range only if you can support the period of work and the range helps the reader understand your contribution.

A federal application requires more detail than your general resume

A general resume uses 2021–2022, but a federal announcement requests month/year. Treat the announcement as controlling for that application. USAJOBS' help guidance asks for start and end dates including month and year, and a vacancy can give further instructions. Gather records, use the dates that support your qualification, and ensure the resume and questionnaire agree. If you cannot establish the month, contact the listed agency or application support instead of assuming that a guessed month will be accepted. (USAJOBS resume guidance; example USAJOBS vacancy instructions)

The common thread is simple: use the date that matches the event, then use only as much detail as you can establish. A cleaner-looking timeline is not worth a false claim.

Frequently asked questions

Is it acceptable to list only years on a resume?

For a general resume, year-only dates can be a reasonable choice when you know the years but cannot verify the months, and the employer has not asked for finer detail. They provide less information about sequence and duration than month/year dates. Some applications, including federal application guidance, specifically ask for month and year. Follow those instructions when they apply, and check whether your industry, country, or employer has its own requirements.

Should I estimate the month if I am fairly sure?

No. “Fairly sure” is a reason to look for a record, not a reason to state a month as fact. Search contemporaneous documents or ask the employer or institution. If you still cannot verify it, keep the date at year-level where allowed, or ask the application contact how to report the unknown month.

Can I put “approximately” before a date?

Use approximate wording only if it is permitted and the approximation is meaningful. Around 2021 does not solve a required month/year field, and it may create more uncertainty on a short resume than it resolves. In a conversation or an application explanation, state that the date is approximate if that is the honest answer. For a compact general resume, a verified year is usually clearer than a guessed month labeled approximate.

Will year-only dates make an employment gap look hidden?

They can make the timeline harder to interpret, because they do not show months. They do not prove that a gap exists or that one has been hidden. If the application requires continuous history or the gap affects a qualification, retrieve month-level dates. Otherwise, use the precision you know and address relevant context truthfully where the application asks for it.

Should all resume dates use the same format?

Use a consistent, readable format within each section, but do not invent precision just to make every entry match. If one date is year-only because that is all you can verify, decide whether a consistent year-only presentation is clearer for the resume. Keep the underlying dates consistent across the resume and application. Follow any instructions that require more detail.

What if I cannot remember the year either?

Do not make up a year range. Look for records, ask the relevant organization, or decide whether the experience is sufficiently relevant to include without a misleading date. If an application requires a complete history, ask how to report an uncertain period. A broad guess can place an experience in the wrong order or create a false overlap.

Should I write a month as a word or a number?

Either can be readable when the employer has not specified a format. Mar 2022 – Oct 2023 is compact; March 2022 – October 2023 is explicit. Follow the form's convention, avoid ambiguous numeric dates such as 03/04/2022 across countries, and use the same style throughout the relevant section. This formatting choice does not change the need to verify the date.

Can I use years only for education but months and years for jobs?

You can, if that accurately reflects what you know and the application permits it. Still, check whether the difference looks confusing. Some readers may assume the missing month reflects an editing inconsistency. A consistent year-only format across a section can reduce that distraction, but required fields and qualification rules take priority.

What if a form forces a month and has no unknown option?

Do not select an arbitrary month without instructions. Review the application help, contact the employer or support address, and ask what to enter when the month cannot be verified. Keep a record of the reply. If you receive no answer before the deadline, make the most accurate choice allowed by the instructions and do not claim that an estimated month is confirmed.

Make the timeline clear without making it up

When you know the year but not the month, use the year alone on a general resume if that format is permitted. Check the application's instructions before submitting. If it requires month/year, verify the date from appropriate records or ask the employer how to report an unknown month. Do not guess to create a smoother timeline.

Then review the rest of the document. Make sure each date refers to the right event, each Present label is still current, and no year-only range is being used to imply a duration you cannot prove. Accurate dates are a small part of a resume, but they shape how a reader understands the whole history.

When you are ready to apply, you can organize and edit your resume in the free resume builder. Keep the dates grounded in records you trust, and keep the final version consistent with the application you are sending.