- Number of holidays
- 17
- Day of the year
- 118
- Days left in the year
- 247
National Superhero Day was invented in 1995 by Marvel Comics employees and has since escaped the office into full international cosplay territory, anchoring April 28 as the calendar’s biggest cape day. National Parvo Awareness Day drives the annual call to vaccinate puppies against canine parvovirus, a virus that kills unvaccinated puppies within 48 hours of symptom onset. AMKD Awareness Day raises visibility for autosomal dominant medullary kidney disease, a rare genetic condition identified only recently. Biological Clock Day turns a reflective spotlight on fertility timelines. Denim Day is the global protest sparked by a 1998 Italian Supreme Court ruling, worn as a public act of solidarity with survivors of sexual violence. One cape day, four awareness campaigns, one protest — an unusually crowded date.
All Holidays On April 28
International Guide Dog Day
National Superhero Day
Biological Clock Day
Clean Comedy Day
Denim Day
Global Pay It Forward Day
Great Poetry Reading Day
Kiss Your Mate Day
National Blueberry Pie Day
National BraveHearts Day
National Cubicle Day
Save the Frogs Day
Workers’ Memorial Day
World Stationery Day
About April 28
April 28 Q&As
What is the most popular holiday on April 28?
On April 28, National Superhero Day is the biggest consumer holiday on the date, founded in 1995 by Marvel Comics employees. National Parvo Awareness Day anchors U.S. pet-health visibility, and Workers’ Memorial Day is the most widely observed globally, coinciding with Denim Day‘s major sexual-violence-awareness participation through its wear-denim protest.
Is April 28 a public holiday?
April 28 is not a federal public holiday in the U.S., but Workers’ Memorial Day is an internationally recognized workplace safety day in Canada, the UK, and over 100 other countries, coinciding with the UN’s World Day for Safety and Health at Work.
What pop culture holidays fall on April 28?
On April 28, National Superhero Day is the biggest pop culture observance, founded in 1995 by Marvel Comics employees. The date also includes Great Poetry Reading Day, Clean Comedy Day, Denim Day, and Kiss Your Mate Day.