Apostrophe in holidays (Mother's Day)

Apostrophes in holiday names cause steady confusion: Mother's Day vs Mothers Day, Veterans Day vs Veterans' Day, New Year's vs New Years. The underlying rule is simple-use possession when the name means "the day of X"-but official spellings and house styles create exceptions you should follow in formal contexts.

Quick answer

Use an apostrophe when the name expresses possession (the day belongs to someone). For formal or legal copy, follow the authoritative spelling used by the organization that names the holiday.

Singular possessor: add 's - Mother's Day, Father's Day.
Plural possessor: add the apostrophe after s - Patriots' Day, All Saints' Day.
Official-name override: if a government or event organizer publishes a form without an apostrophe, use that form for legal/HR documents.

Core rules: possessive or not?

Test the phrase by inserting "a day for X." If that rewrites naturally, use a possessive. If the name is a label or an official title that omits punctuation, use the published form.

Singular noun → 's: St. Patrick → St. Patrick's Day.
Plural noun ending in s → s': the saints → All Saints' Day.
Irregular plural → 's: children → Children's Day.

Right: Mother's Day = a day for mothers.
Right: All Saints' Day = a day for all the saints.

Common wrong/right pairs (copyable fixes)

The examples below show typical mistakes with the corrected forms you can paste into your text.

Wrong: Mothers Day brunch starts at noon.
Right: Mother's Day brunch starts at noon.
Wrong: New Years celebrations are loud downtown.
Right: New Year's celebrations are loud downtown.
Wrong: Veterans' Day ceremonies will be held at the memorial.
Right: Veterans Day ceremonies will be held at the memorial.
Wrong: All Saints Day mass begins at nine.
Right: All Saints' Day mass begins at nine.
Wrong: Patriots Day commemorations happen in April.
Right: Patriots' Day commemorations happen in April.
Wrong: International Womens Day events will be livestreamed.
Right: International Women's Day events will be livestreamed.
Wrong: Presidents Day sale starts Friday.
Right: Presidents' Day sale starts Friday. (Or use Washington's Birthday in formal federal contexts.)

Real usage and tone: style guide vs official name

Pick a consistent approach. Use the authoritative spelling for legal and HR copy. For marketing, news, or editorial content, choose a house style and apply it consistently.

Policy: The office will be closed on Veterans Day. (Use agency spelling for formal notices.)
Marketing: Celebrate Mother's Day with our special menu. (Brand voice trumps pedantry; be consistent.)
Newsroom: Follow your stylebook-some outlets drop the apostrophe in Presidents Day; others keep it.

Work examples (calendar invites, policies, HR notices)

Short, paste-ready samples for workplace communications.

Calendar: Mother's Day - Office closed for company brunch (May 12).
HR email: The office will observe Veterans Day; eligible staff may use the company holiday day or a floating holiday.
Policy: Employees are eligible for a floating holiday following New Year's Day.

School examples (flyers, essays, event titles)

Campus materials should avoid punctuation errors-use possessives when the event is "a day for" a group.

Flyer: Mother's Day craft fair - join us May 8.
Essay prompt: How have Veterans Day observances changed since WWII?
Poster: International Women's Day panel - March 8, 6pm.

Try your own sentence

Context reveals whether a possessive fits. Paste the full sentence to check how the holiday name functions in that sentence.

Casual examples (social posts, texts, cards)

Even informal messages look sharper when the punctuation matches intent.

Text: Happy Mother's Day! Brunch at 11?
Tweet: Who's ready for New Year's Eve plans?
Card: Wishing you a happy Father's Day - thanks for everything.

How to fix your sentence (checklist + rewrite templates)

Use a quick three-step checklist, then apply a rewrite template.

Checklist: 1) Can you rephrase as "a day for X"? 2) Is the possessor singular or plural? 3) Is there an authoritative official spelling to follow?

Template 1 (singular possessor): [X]'s Day → Mother's Day. Example: "Mothers Day brunch" → "Mother's Day brunch."
Template 2 (plural possessor): [Xs]' Day → Patriots' Day. Example: "Patriots Day parade" → "Patriots' Day parade."
Template 3 (official-name override): Use the source's exact form. Example: "Veterans' Day" (informal) → "Veterans Day" (official for U.S. federal contexts).

Memory trick and short heuristics

One mnemonic and three heuristics make the decision immediate.

Mnemonic: "If it's their day, make it theirs." Replace the holiday with "a day for X"-if it fits, use a possessive.
Heuristic 1: Singular possessor → add 's (Mother's, Father's).
Heuristic 2: Plural possessor → add apostrophe after s (Patriots', Saints').
Heuristic 3: Official-name override → follow the authoritative source for legal/HR copy.

Similar mistakes: hyphenation, spacing, punctuation & grammar fundamentals

Aside from apostrophes, writers trip over hyphens, stray spaces, and irregular plurals. Keep these basic checks in mind.

Hyphenation: Don't invent hyphens (avoid New-Year's Day). Use a hyphen only if the official title includes it.
Spacing: Never put a space before an apostrophe (Mother 's Day is wrong).
Punctuation: Use an apostrophe for possession, not a single quote mark or backtick.
Grammar: Singular → 's; plural ending in s → s'; irregular plurals → 's (children → Children's Day).

Wrong: New-Year's Day
Right: New Year's Day
Wrong: Mother 's Day
Right: Mother's Day
Wrong: Childrens Day
Right: Children's Day

FAQ

Do holidays always need an apostrophe?

No. Use an apostrophe when the holiday is possessive ("the day of someone"). If an organization publishes the name without punctuation, use that form for formal or legal contexts.

Is it Veterans Day or Veterans' Day?

The official U.S. federal form is Veterans Day (no apostrophe). Many writers use Veterans' Day to show possession; use the federal spelling in government or legal documents.

Should I write New Year's or New Years?

New Year's (with apostrophe) is correct for New Year's Day or New Year's Eve. New Years without an apostrophe is a common mistake.

Which is correct: President's Day, Presidents' Day, or Presidents Day?

Usage varies. The federal observance is officially Washington's Birthday. If you mean multiple presidents, Presidents' Day (plural possessive) makes sense; otherwise pick a form from your style guide and stay consistent.

How can I check a holiday's official spelling quickly?

Look up the naming organization (government website or event organizer) for the published title. For quick checks in ordinary writing, apply the "a day for X" test, then verify authoritative sources for formal copy.

Need to check one sentence quickly?

Paste the full sentence into a proofreading tool that flags punctuation or keep a one-page style list of the holiday spellings your team uses. Small, consistent rules save repeated corrections.