The following is a list of observed commemorative days, that is, days that are used by various governments, groups and organizations to raise awareness of an issue, commemorate a group or event, or celebrate something.

• Australia Day
• ANZAC Day
• April Fools Day
• Arbor Day
• Bank Holiday
• Chinese New Year
• D-Day
• Day of the Dead
• Earth Day
• Easter
• German Unity Day
• Groundhog Day
• Holi
• Imbolc
• International Talk Like a Pirate Day
• Kwanzaa
• Lantern Festival
• Lunar New Year
• Mardi Gras
• Martin Luther King Day
• May Day
• Mole Day
• New Year's Day - January 1st
• Pi Day
• Purim
• Presidents' Day
• Saint Patrick's Day
• Shrove Tuesday
• Valentine's Day
• Veterans Day
• Victory in Europe Day
• Victory over Japan Day
• Women's Day
• World AIDS Day

Commemorative months

• Women's History Month

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