2020
Institutional decision
International Day to Protect Education from Attack
The UN Digital Library action note records adoption on 28 May 2020 under the Assembly’s silence procedure.
Evergreen date guide
What is celebrated on May 28?
See the observances and verified observance-history milestones attached to May 28. 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.
2019
Institutional decision
International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief
The UN Digital Library records adoption without a vote on 28 May 2019.
2019
Institutional decision
World Chagas Disease Day
The committee recommendation carrying WHA72(20) was approved by the Health Assembly at its seventh plenary meeting on 28 May 2019.
2019
Institutional decision
World Patient Safety Day
The Health Assembly approved WHA72.6 at its seventh plenary meeting on 28 May 2019.
1930
Later action
Pan American Day
Issued a U.S.-specific presidential proclamation recognizing April 14 as Pan American Day in response to the Pan American Union recommendation.
Reviewed depth
Other in-depth guides on May 28
Source-backedFixed AnnualIn-depth guide
Independence Day
Azerbaijan’s 2021 law names 28 May Independence Day, commemorating the 1918 declaration by the Azerbaijan Democratic Republic; the presidential holiday register uses the current Independenc…
Source-backedFixed AnnualIn-depth guide
International Day of Action for Women’s Health
May 28 campaign history states that LACWHN proposed annual May 28 commemoration in 1987 in Costa Rica and WGNRR was asked to lead the campaign globally.
Source-backedFixed AnnualIn-depth guide
National Day
Official Ethiopian sources identify May 28 as a national day/national holiday associated with the 1991 downfall of the Derg military government. The Ethiopian Investment Commission currentl…
Source-backedFixed AnnualIn-depth guide
National Flag Day / National Flag Days
Philippine law declares May 28 through June 12 each year as Flag Days; Proclamation No. 374 (1965) established May 28 as Flag Day to commemorate the first unfurling of the Philippine flag a…
Source-backedFixed AnnualIn-depth guide
National Hamburger Day
Wendy’s and BurgerFi first-party materials identify May 28 as National Hamburger Day in separate years.
Source-backedFixed AnnualIn-depth guide
Whooping Crane Day
Houston Zoo states that Whooping Crane Day takes place on May 28 each year, and the International Crane Foundation promoted the same May 28 observance in 2026; reviewed primary conservation…
Explore the mix
All topics →Topics represented on May 28
8 observances
All observances on this date
Source-backedFixed AnnualIn-depth guide
Independence Day
Azerbaijan’s 2021 law names 28 May Independence Day, commemorating the 1918 declaration by the Azerbaijan Democratic Republic; the presidential holiday register uses the current Independenc…
Source-backedFixed AnnualIn-depth guide
International Day of Action for Women’s Health
May 28 campaign history states that LACWHN proposed annual May 28 commemoration in 1987 in Costa Rica and WGNRR was asked to lead the campaign globally.
Source-backedFixed AnnualIn-depth guide
National Day
Official Ethiopian sources identify May 28 as a national day/national holiday associated with the 1991 downfall of the Derg military government. The Ethiopian Investment Commission currentl…
Source-backedFixed AnnualIn-depth guide
National Flag Day / National Flag Days
Philippine law declares May 28 through June 12 each year as Flag Days; Proclamation No. 374 (1965) established May 28 as Flag Day to commemorate the first unfurling of the Philippine flag a…
Source-backedFixed AnnualIn-depth guide
National Hamburger Day
Wendy’s and BurgerFi first-party materials identify May 28 as National Hamburger Day in separate years.
Source-backedFixed AnnualIn-depth guide
Whooping Crane Day
Houston Zoo states that Whooping Crane Day takes place on May 28 each year, and the International Crane Foundation promoted the same May 28 observance in 2026; reviewed primary conservation…
Source-backedFixed AnnualIn-depth guide
World Hunger Day
Current World Hunger Day first-party material verifies May 28, says The Hunger Project founded the observance in 2011, and identifies ongoing campaign leadership. Current statistics remain…
Source-backedFixed AnnualIn-depth guide
World Passion Fruit Martini Day
Current references place World Passion Fruit Martini Day on May 28 and attribute its establishment in 2021 to Funkin Cocktails.
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 →