2025
Institutional decision
National Recommit to Your Fitness Day
The contemporaneous F45/Business Wire release announcing the first-ever celebration is dated April 4, 2025.
Evergreen date guide
What is celebrated on April 4?
See the observances and verified observance-history milestones attached to April 4. 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.
2012
First observance
Whole Grain Sampling Day
The organizer advertised this as its first National Whole Grain Sampling Day.
2006
First observance
International Day for Mine Awareness and Assistance in Mine Action
UN briefing material for 4 April 2006 identifies it as the first International Day for Mine Awareness and Assistance in Mine Action.
Curated global anchors
See the collection →Major global guides on April 4
A reviewed starting point drawn from prominent global observances with strong institutional or organizer sources. Each observance keeps its own documented status and scope.
Source-backedFixed AnnualIn-depth guide
International Day for Mine Awareness and Assistance in Mine Action
A/RES/60/97
Reviewed depth
Other in-depth guides on April 4
Source-backedRule Based AnnualIn-depth guide
Every Day is Tag Day™
American Humane states that it created Every Day is Tag Day™ and that the nationwide pet-identification effort is held annually on the first Saturday in April.
Source-backedFixed AnnualIn-depth guide
Independence Day
Senegal’s Presidency verifies current April 4 Independence Day recurrence and Law No. 74-52 fixes April 4 as the national holiday while superseding earlier holiday provisions.
Source-backedEdition SpecificIn-depth guide
National Jeep® 4x4 Day
Jeep’s first-party site identifies National Jeep® 4x4 Day on April 4, 2026.
Source-backedRule Based AnnualIn-depth guide
National Love Our Children Day
A creator-issued 2007 Love Our Children USA release calls National Love Our Children Day an initiative of Love Our Children USA, describes that year as the fourth annual edition, and states…
Source-backedFixed AnnualIn-depth guide
School Librarian Day
American Association of School Librarians publications identify April 4 as National School Librarian Day/School Librarian Day.
Explore the mix
All topics →Topics represented on April 4
6 observances
All observances on this date
Source-backedRule Based AnnualIn-depth guide
Every Day is Tag Day™
American Humane states that it created Every Day is Tag Day™ and that the nationwide pet-identification effort is held annually on the first Saturday in April.
Source-backedFixed AnnualIn-depth guide
Independence Day
Senegal’s Presidency verifies current April 4 Independence Day recurrence and Law No. 74-52 fixes April 4 as the national holiday while superseding earlier holiday provisions.
Source-backedFixed AnnualIn-depth guide
International Day for Mine Awareness and Assistance in Mine Action
A/RES/60/97
Source-backedEdition SpecificIn-depth guide
National Jeep® 4x4 Day
Jeep’s first-party site identifies National Jeep® 4x4 Day on April 4, 2026.
Source-backedRule Based AnnualIn-depth guide
National Love Our Children Day
A creator-issued 2007 Love Our Children USA release calls National Love Our Children Day an initiative of Love Our Children USA, describes that year as the fourth annual edition, and states…
Source-backedFixed AnnualIn-depth guide
School Librarian Day
American Association of School Librarians publications identify April 4 as National School Librarian Day/School Librarian Day.
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 →