2024
First observance
World Football Day
United Nations material explicitly identifies 25 May 2024 as the inaugural World Football Day; an advance UN celebration was held on 22 May 2024.
Evergreen date guide
What is celebrated on May 25?
See the observances and verified observance-history milestones attached to May 25. Each observance keeps its own source and date details.
Verified history
Today in history →On this date in observance history
Selected observance milestones connected to this date, based on reviewed sources.
2023
Later action
National Day of Prayer and Thanksgiving
Inserted National Day of Prayer and Thanksgiving into the public-holiday schedule on the second Wednesday in July.
2021
First observance
International Skin Pigmentation Day
Bella Aurora published a May 25, 2021 International Skin Pigmentation Day event and described the 2022 edition as the second year running.
2016
Institutional decision
Memorial Day (Timor-Leste)
The Ministry of Justice legal index dates Law No. 3/2016 to 25 May 2016.
2016
Later action
Memorial Day (Timor-Leste)
Redefined the December 7 public holiday from National Heroes Day to Memory Day and assigned National Heroes Day to December 31.
2008
First observance
World Thyroid Day
TFI documents original first-year plan and ETA documents initial 2008 observance.
2006
First observance
Geek Pride Day
The organizer’s May 25, 2006 post explicitly calls it the first Día del Orgullo Friki and directs participants to that day’s activities.
1963
Institutional decision
African Liberation Day (African Day)
The resolution was adopted by the conference held in Addis Ababa from 22 to 25 May 1963 and the archival record dates the final plenary session to May 25.
Reviewed depth
Other in-depth guides on May 25
Source-backedFixed AnnualIn-depth guide
African Liberation Day (African Day)
The official Government of The Gambia holiday list names May 25 as African Liberation Day (African Day).
Source-backedRule Based AnnualIn-depth guide
Amateur Radio Military Appreciation Day
ARMAD was founded by Emery McClendon in 2003. Contemporary ARMAD references place the annual event on the Saturday of U.S. Memorial Day weekend.
Source-backedFixed AnnualIn-depth guide
Día de la Revolución de Mayo
Argentina’s national government identifies May 25 as Día de la Revolución de Mayo y Primer Gobierno Patrio and treats it as an immovable national holiday.
Source-backedFixed AnnualIn-depth guide
Geek Pride Day
Spanish press coverage documents May 25 as Día del Orgullo Friki/Geek Pride Day and traces the organized Spanish observance to 2006.
Source-backedFixed AnnualIn-depth guide
Independence Day
Jordan’s Prime Ministry preserves the 25 May 1946 independence declaration, while the Foreign Ministry independently lists May 25 as Independence Day among current public holidays.
Source-backedFixed AnnualIn-depth guide
International Skin Pigmentation Day
Bella Aurora first-party pages document International Skin Pigmentation Day on 25 May 2021 and call the 2022 campaign the second year running, supporting a 2021 first edition; a later regis…
Explore the mix
All topics →Topics represented on May 25
12 observances
All observances on this date
Source-backedFixed AnnualIn-depth guide
African Liberation Day (African Day)
The official Government of The Gambia holiday list names May 25 as African Liberation Day (African Day).
Source-backedRule Based AnnualIn-depth guide
Amateur Radio Military Appreciation Day
ARMAD was founded by Emery McClendon in 2003. Contemporary ARMAD references place the annual event on the Saturday of U.S. Memorial Day weekend.
Source-backedFixed AnnualIn-depth guide
Día de la Revolución de Mayo
Argentina’s national government identifies May 25 as Día de la Revolución de Mayo y Primer Gobierno Patrio and treats it as an immovable national holiday.
Source-backedFixed AnnualIn-depth guide
Geek Pride Day
Spanish press coverage documents May 25 as Día del Orgullo Friki/Geek Pride Day and traces the organized Spanish observance to 2006.
Source-backedFixed AnnualIn-depth guide
Independence Day
Jordan’s Prime Ministry preserves the 25 May 1946 independence declaration, while the Foreign Ministry independently lists May 25 as Independence Day among current public holidays.
Source-backedFixed AnnualIn-depth guide
International Skin Pigmentation Day
Bella Aurora first-party pages document International Skin Pigmentation Day on 25 May 2021 and call the 2022 campaign the second year running, supporting a 2021 first edition; a later regis…
Source-backedRule Based AnnualIn-depth guide
Memorial Day
U.S. federal sources document the Grand Army of the Republic’s General Orders No. 11 of May 5, 1868, the May 30 Decoration Day observance, and current federal law placing Memorial Day on th…
Source-backedFixed AnnualIn-depth guide
National Bath Bomb Day
National Day Archives records May 25 of each calendar year and identifies Desert Bath Company as the 2021 creator; current calendar coverage preserves the same date.
Source-backedRule Based AnnualIn-depth guide
National Italian Beef Day
Buona Companies states that it founded/established National Italian Beef Day in 2015 after petitioning to designate the Saturday during U.S. Memorial Day weekend; its 2025 and 2026 first-pa…
Source-backedRule Based AnnualIn-depth guide
Prayer for Peace, Memorial Day
36 U.S.C. §116 directly establishes the recurring last-Monday-in-May federal prayer-proclamation framework; current presidential proclamations continue the statutory practice.
Source-backedFixed AnnualIn-depth guide
World Football Day
A/RES/78/281
Source-backedFixed AnnualIn-depth guide
World Thyroid Day
European Thyroid Association and sister thyroid associations
How dates are selected
This page combines fixed annual dates, reusable calendar rules and year-specific dates confirmed for 2026. Variable or historical dates are included only when they are clearly supported.
Read the methodology →