List of holidays, observances and celebration.
January[]
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- New Year's Day — January 1
- National Rubber Duckie Day — January 13
- Martin Luther King Jr. Day — third Monday of January
- Chinese New Year / Lunar New Year — first day of the lunisolar calendar
February[]
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- Black History Month
- Super Bowl Sunday — first Sunday of February
- Groundhog Day — February 2
- Washington's Birthday / Presidents' Day — third Monday of February
- Darwin Day — February 11
- Galentine's Day — February 13
- Valentine's Day — February 14
- Purim — 14th day of Adar
- Mardi Gras — 47 days before Easter
- Leap Day — February 29
March[]
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- Women's History Month
- International Women's Day — March 8
- Harriet Tubman Day — March 10
- Pi Day — March 14
- Ides of March — March 15
- Saint Patrick's Day — March 17
- First Day of Spring — March 20
- World Puppetry Day — March 21
- World Water Day — March 22
- Piano Day — March 29
April[]
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- April Fools' Day — April 1
- Opening Day — first week in April
- Easter — determined by the Computus
- Passover — 15th day of the month of Nisan
- Tax Day — April 15
- Siblings Day — April 10
- 420 — April 20
- Earth Day — April 22
- Arbor Day — last Friday in April
May[]
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- Star Wars Day — May 4
- Cinco de Mayo — May 5
- National Day of Prayer — first Thursday in May
- Free Comic Book Day — first Saturday in May
- Kermit's Birthday — May 9
- Teacher Appreciation Day — Tuesday of the first full week of May
- Mother's Day — second Sunday in May
- Bunch Beetle Migration — May 14
- Sally Ride Day — May 26
- Memorial Day — last Monday in May
- Shavuot — sixth day of Sivan
June[]
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- Pride Month
- Father's Day — third Sunday in June
- Flag Day — June 14
- Juneteenth — June 19
- First Day of Summer — June 20
July[]
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- Canada Day — July 1
- Independence Day — July 4
August[]
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- Shark Week — first week of August
- Raksha Bandhan — full moon of Shrawan
- National Dog Day — August 26
September[]
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- Labor Day — first Monday of September
- Grandparents Day — first Sunday after Labor Day
- 9/11 Remembrance Day — September 11
- National Hispanic Heritage Month — September 15 to October 15
- International Talk Like a Pirate Day — September 19
- First Day of Fall — September 22
- Jim Henson's Birthday — September 24
- Jerry Juhl Day — September 25
- Rosh Hashanah — first day of Tishrei
October[]
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- International Day of the Girl Child — October 11
- Columbus Day — second Monday in October
- Indigenous Peoples' Day — second Monday in October
- Leif Erikson Day — October 9
- Diwali — Amavasya of Kartik
- National Grouch Day — October 15
- Halloween — October 31
November[]
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- Dia de los Muertos — November 1-2
- Election Day (US) — first Tuesday after November 1
- Sesame Street Day — November 10
- Veterans Day — November 11
- World Kindness Day — November 13
- Thanksgiving — fourth Thursday in November
December[]
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- World AIDS Day — December 1
- Hanukkah — 25 Kislev to 2 Tevet
- National Cookie Day — December 4
- First Day of Winter — December 22
- Festivus — December 23
- Christmas Eve — December 24
- Christmas — December 25
- Kwanzaa — December 26 to January 1
- New Year's Eve — December 31