2026
Later action
APOL1-Mediated Kidney Disease (AMKD) Awareness Day
AKF announced a coalition intended to expand awareness, education and action around APOL1-mediated kidney disease alongside the recurring awareness day.
Evergreen date guide
What is celebrated on April 28?
See the observances and verified observance-history milestones attached to April 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.
2021
Institutional decision
International Day of Women Judges
The UN Digital Library action record gives 28 April 2021, adopted without a vote at the 62nd plenary meeting.
2021
Institutional decision
World Drowning Prevention Day
The official UN action record for UN General Assembly resolution A/RES/75/273 gives the adoption/action date as 28 April 2021.
2017
First observance
Stop Food Waste Day
Compass Group USA explicitly called April 28, 2017 the first National Stop Food Waste Day.
2016
Later action
National Concert Day
Documented the 2016 edition for 3 May rather than the 5 May date used in 2015.
2014
Institutional decision
Guam History and Chamorro Heritage Day
The enrolled public law records approval/signature on April 28, 2014.
2011
First observance
International Girls In ICT Day
ITU records that girls around the world celebrated the first annual international Girls in ICT Day on 28 April 2011.
2009
First observance
Save The Frogs Day
SAVE THE FROGS! identifies April 28, 2009 as the first annual Save The Frogs Day.
Reviewed depth
Other in-depth guides on April 28
Source-backedRule Based AnnualIn-depth guide
APOL1-Mediated Kidney Disease (AMKD) Awareness Day
The American Kidney Fund provides an AMKD Awareness Day proclamation template that places the observance on the last Tuesday of each April, and its 2026 campaign materials mark 28 April 202…
Source-backedFixed AnnualIn-depth guide
National Blueberry Pie Day
The U.S. Highbush Blueberry Council explicitly states that National Blueberry Pie Day is celebrated on April 28 each year and repeats the date in other campaign materials.
Source-backedFixed AnnualIn-depth guide
National Day of Mourning for persons killed or injured in the workplace
The Government of Canada states that the Workers Mourning Day Act established April 28 as the official day observed every year, and current 2026 federal material continues to mark the Day o…
Source-backedRule Based AnnualIn-depth guide
National Parvo Awareness Day
Elanco states that it launched the first National Parvo Awareness Day on 23 April 2024 and that the day recurs on the fourth Tuesday in April; independent veterinary guidance supports preve…
Source-backedEdition SpecificIn-depth guide
Poetry & the Creative Mind
The Academy of American Poets identifies Poetry & the Creative Mind as its annual National Poetry Month event held since 2003. Its archived 2026 event page verifies the 28 April 2026 editio…
Source-backedFixed AnnualIn-depth guide
Save The Frogs Day
SAVE THE FROGS! states that Save The Frogs Day takes place on April 28 every year and documents the 18th annual event on April 28, 2026.
Explore the mix
All topics →Topics represented on April 28
9 observances
All observances on this date
Source-backedRule Based AnnualIn-depth guide
APOL1-Mediated Kidney Disease (AMKD) Awareness Day
The American Kidney Fund provides an AMKD Awareness Day proclamation template that places the observance on the last Tuesday of each April, and its 2026 campaign materials mark 28 April 202…
Source-backedFixed AnnualIn-depth guide
National Blueberry Pie Day
The U.S. Highbush Blueberry Council explicitly states that National Blueberry Pie Day is celebrated on April 28 each year and repeats the date in other campaign materials.
Source-backedFixed AnnualIn-depth guide
National Day of Mourning for persons killed or injured in the workplace
The Government of Canada states that the Workers Mourning Day Act established April 28 as the official day observed every year, and current 2026 federal material continues to mark the Day o…
Source-backedRule Based AnnualIn-depth guide
National Parvo Awareness Day
Elanco states that it launched the first National Parvo Awareness Day on 23 April 2024 and that the day recurs on the fourth Tuesday in April; independent veterinary guidance supports preve…
Source-backedEdition SpecificIn-depth guide
Poetry & the Creative Mind
The Academy of American Poets identifies Poetry & the Creative Mind as its annual National Poetry Month event held since 2003. Its archived 2026 event page verifies the 28 April 2026 editio…
Source-backedFixed AnnualIn-depth guide
Save The Frogs Day
SAVE THE FROGS! states that Save The Frogs Day takes place on April 28 every year and documents the 18th annual event on April 28, 2026.
Source-backedRule Based AnnualIn-depth guide
School Bus Driver Appreciation Day
Current school-government communications and a New York State Assembly member page identify School Bus Driver Appreciation Day as the fourth Tuesday in April; in 2026 that is 28 April.
Source-backedFixed AnnualIn-depth guide
Workers Memorial Day
The International Labour Organization states that 28 April has been associated since 1996 with the international trade union movement’s commemoration of victims of occupational accidents an…
Source-backedFixed AnnualIn-depth guide
World Day for Safety and Health at Work
ILO observance
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 →