Days & Observances OBSERVANCES
National Cheeseburger Day
National Cheeseburger Day is celebrated every year on September 18, honoring the classic cheese-topped hamburger.
Days & Observances
National days, observances and what they celebrate — dates and origins.
Days & Observances OBSERVANCES
National Coffee Day
In the United States and Canada, National Coffee Day is celebrated on September 29, days before International Coffee Day on October 1.
Days & Observances OBSERVANCES
National Cat Day
National Cat Day is observed in the United States on October 29 to celebrate cats and encourage adoption from shelters.
Days & Observances OBSERVANCES
National Best Friends Day 2026: Date, Origin & How to Celebrate
National Best Friends Day is a June 8 observance honoring your closest friends.
Days & Observances OBSERVANCES
National Boyfriend Day 2026: Date, Origin & How to Celebrate
National Boyfriend Day is an unofficial October 3 observance celebrating boyfriends and partners.