Should Memorial Day be capitalized depends on how and where the phrase appears. As the name of a U.S. holiday, Memorial Day is capitalized; as a general descriptive phrase, it is often lowercase. Proper use follows standard title capitalization rules for names of holidays, formal titles before names, and the first word of a sentence or heading.
Capitalize Memorial Day as a Holiday Name
When referring to the official federal holiday observed on the last Monday in May, capitalize both words: Memorial Day. This follows the standard rule of capitalizing named holidays. Use Memorial Day in titles, headings, and formal prose when the intent is the specific U.S. observance. Consistency in capitalization helps readers recognize the event as a formal, named occasion rather than a generic reference to remembering the fallen.
General Use and Common Noun Phrases
In generic contexts, lowercase memorial day is acceptable when the phrase functions as a common description. Examples include "a memorial day for veterans" or "each community can hold its own memorial day." Lowercasing is appropriate when the phrase is not the official title and is used descriptively. Editorial guidance varies, but many style guides treat holiday names as proper nouns and descriptive phrases as lowercase unless they form part of a formal title.
Title and Heading Capitalization Rules
Title Case in Headlines and Page Titles
In headline and title styles, capitalize major words, including Memorial Day. Apply title-case rules consistently: nouns, pronouns, verbs, adjectives, and adverbs are capitalized, while short articles, coordinating conjunctions, and prepositions are usually lowercase unless they begin or end the title. This approach ensures clarity, professionalism, and compliance with common Web Content Accessibility Guidelines (WCAG) for readable headings.
APA, MLA, and Associated Press Standards
APA, MLA, and AP generally capitalize Memorial Day when used as the official holiday name. In APA Style, formal holiday names are capitalized in text and references. MLA follows similar conventions for named days in prose. The AP Stylebook capitalizes holidays when they are used as names, including Memorial Day, and lowercases them in generic descriptive uses. Confirm your organization’s style guide for any deviations, but aligning with major style manuals is a reliable default.
Practical Editorial and Brand Guidance
Adopt a consistent rule set across content types and channels. For web pages, social posts, and marketing materials, decide whether to apply sentence case, title case, or strict AP-style capitalization. Consider accessibility, SEO, and readability when choosing heading formats. Use headings such as Memorial Day Events or Memorial Day History to align with user search behavior, and maintain casing consistency within templates and content systems.
Quick Reference: Memorial Day Capitalization
| Context | Capitalization | Notes |
|---|---|---|
| Official holiday name | Memorial Day | Federal holiday, last Monday in May |
| General descriptive use | memorial day | Used as a common noun phrase |
| Title-case headings | Memorial Day | Capitalize major words |
| Sentence start | Memorial Day | Always capitalize the first word |
| Brand or program names | Varies by brand; follow official logo guidelinesCheck brand style guide for exact usage |
Accessibility, Localization, and International Considerations
Clearly capitalized holiday names improve readability for assistive technologies and users with cognitive differences. For international audiences, note that Memorial Day is primarily a U.S. observance; other countries may have similar remembrance days with different naming and capitalization. If your site serves global users, specify U.S. context (e.g., Memorial Day in the United States) to avoid confusion and maintain clarity across regions.
Implementation Checklist for Consistent Use
- Define a site-wide rule: capitalize Memorial Day as the official holiday name.
- Use sentence case for body text and title case for headings and meta titles.
- Add guidance to your style guide and train contributors and editors.
- Audit existing content for inconsistent capitalization and update as needed.
- Verify local and regional holidays separately to avoid conflating observances.
Consistent capitalization of Memorial Day supports clarity, professionalism, and accessibility across content. By following standard rules for holiday names, title case, and descriptive phrases, teams can present a reliable, user-friendly experience that meets editorial and SEO goals.