2011
Institutional decision
International Day of Friendship
UN Digital Library records 3 May 2011 as the action/adoption date of General Assembly resolution 65/275.
Evergreen date guide
What is celebrated on May 3?
See the observances and verified observance-history milestones attached to May 3. 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.
2008
Precursor
World Cleanup Day
The one-day nationwide cleanup in Estonia became the catalyst for the Let’s Do It civic movement that later developed the coordinated World Cleanup Day model.
2006
First observance
National Specially-Abled Pets Day
Checkiday records the day as observed annually on May 3 since 2006, citing an archived creator-site source trail.
1994
First observance
World Press Freedom Day
UN and UNESCO retrospective material identify 3 May 1994 as the first worldwide commemoration/observance after the General Assembly’s December 1993 designation.
1991
Precursor
World Press Freedom Day
African journalists at the Windhoek seminar adopted the Declaration on 3 May 1991 and proposed devoting a day to press freedom; UNESCO supported the proposal and the UN General As…
Curated global anchors
See the collection →Major global guides on May 3
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
World Press Freedom Day
UNESCO 26 C/Resolution 4.3
Reviewed depth
Other in-depth guides on May 3
Source-backedFixed AnnualIn-depth guide
Constitution Memorial Day
Japan’s current government holiday guidance identifies Constitution Memorial Day on 3 May, explains that it commemorates the Constitution taking effect on 3 May 1947, and states that the ho…
Source-backedFixed AnnualIn-depth guide
Día de la Cruz
El Salvador Ministry of Culture repeatedly documents Día de la Cruz on May 3 as a living syncretic Salvadoran cultural-religious tradition with Christian, Indigenous and agricultural elemen…
Source-backedRule Based AnnualIn-depth guide
International Bereaved Mother’s Day
Founder Carly Marie’s published account states that International Bereaved Mother’s Day was created in 2010 and is held on the first Sunday of May; current bereavement organizations observe…
Source-backedRule Based AnnualIn-depth guide
International Dawn Chorus Day
The Wildlife Trusts identifies International Dawn Chorus Day on the first Sunday in May and describes the celebration of birdsong at dawn
Source-backedFixed AnnualIn-depth guide
National Montana Day
National Day Calendar lists National Montana Day on 3 May. The U.S. Senate records Montana’s admission/statehood date as 8 November 1889. The two dates are deliberately kept separate so the…
Source-backedFixed AnnualIn-depth guide
National SAN Architect Day
National Day Calendar states that KCI, Inc. founded/submitted National SAN Architect Day and that the Registrar proclaimed it to be observed annually on May 3.
Explore the mix
All topics →Topics represented on May 3
10 observances
All observances on this date
Source-backedFixed AnnualIn-depth guide
Constitution Memorial Day
Japan’s current government holiday guidance identifies Constitution Memorial Day on 3 May, explains that it commemorates the Constitution taking effect on 3 May 1947, and states that the ho…
Source-backedFixed AnnualIn-depth guide
Día de la Cruz
El Salvador Ministry of Culture repeatedly documents Día de la Cruz on May 3 as a living syncretic Salvadoran cultural-religious tradition with Christian, Indigenous and agricultural elemen…
Source-backedRule Based AnnualIn-depth guide
International Bereaved Mother’s Day
Founder Carly Marie’s published account states that International Bereaved Mother’s Day was created in 2010 and is held on the first Sunday of May; current bereavement organizations observe…
Source-backedRule Based AnnualIn-depth guide
International Dawn Chorus Day
The Wildlife Trusts identifies International Dawn Chorus Day on the first Sunday in May and describes the celebration of birdsong at dawn
Source-backedFixed AnnualIn-depth guide
National Montana Day
National Day Calendar lists National Montana Day on 3 May. The U.S. Senate records Montana’s admission/statehood date as 8 November 1889. The two dates are deliberately kept separate so the…
Source-backedFixed AnnualIn-depth guide
National SAN Architect Day
National Day Calendar states that KCI, Inc. founded/submitted National SAN Architect Day and that the Registrar proclaimed it to be observed annually on May 3.
Source-backedFixed AnnualIn-depth guide
National Specially-Abled Pets Day
National Day Calendar records May 3 as National Specially-Abled Pets Day and attributes its founding to animal advocate Colleen Paige; archived creator material is also referenced by indepe…
Source-backedFixed AnnualIn-depth guide
Wild Koala Day
Wild Koala Day first-party material fixes the observance on May 3, documents its beginning in 2016 through a network of koala conservation groups, and continues to organize current annual p…
Source-backedRule Based AnnualIn-depth guide
World Laughter Day
Laughter Yoga International states that Dr. Madan Kataria created World Laughter Day in 1998, with the first gathering in Mumbai; its current recurrence is the first Sunday of May.
Source-backedFixed AnnualIn-depth guide
World Press Freedom Day
UNESCO 26 C/Resolution 4.3
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 →