2025
January
- January 6 - Three Kings Day
- January 7 - Orthodox Christmas
- January 20 - MLK Day
- January 27 - International Holocaust Remembrance Day
- January 29 - Lunar New Year
February
- February 1 to February 28 - Black History Month
- February 3 - National Women Physicians Day
- February 28 to March 30 - Ramadan
March
- March 1 to March 31 - National Irish American Heritage Month
- March 1 to March 31 - Women’s History Month
- March 5 - Ash Wednesday
- March 14 - Holi
- March 8 - International Women’s Day
- March 20 - Nowruz
- March 20 - Ostara
- March 27 - Laylat Al Qadr
- March 29 to March 30 - Eid Al Qadr
- March 31 - Transgender Day of Visibility
April
- April 1 to April 30 - Arab American Heritage Month
- April 1 to April 30 - Celebrate Diversity Month
- April 1 to April 30 - Deaf History Month
- April 1 to April 30 - Genocide Awareness Month
- April 1 to April 30 - National Minority Health Month
- April 9 to April 10 - Eid Al Fitr
- April 12 to April 20 - Passover
- April 14 - Vaisakhi
- April 18 - Good Friday
- April 20 - Easter
- April 20 - Orthodox Easter
May
- May 1 to May 31 - Asian Pacific American Heritage Month
- May 1 to May 31 - Jewish American Heritage Month
- May 1 to May 31 - Mental Health Awareness Month
- May 12 - Vesak
- May 21 - World Day for Cultural Diversity
June
- June 1 to June 30 - Immigrant Heritage Month
- June 1 to June 30 - Pride Month
- June 6 to June 7 - Eid Al Adha
- June 19 - Juneteenth
- June 20 - Litha
July
- July 1 to July 31 - Disability Pride Month
- July 1 to July 31 - Minority Mental Health Awareness Month
- July 5 to July 6 - Ashura
- July 21 - Dharma Day
August
- August 13 to August 15 - Obon
- August 26 - Women’s Equality Day
September
- September 15 to October 15 - National Hispanic Heritage Month
- September 22 to September 24 - Rosh Hashanah
October
- September 15 to October 15 - National Hispanic Heritage Month
- October 1 to October 31 - Disability Employment Awareness Month
- October 1 to October 31 - LGBTQ+ History Month
- October 1 - October 31 - Polish American Heritage Month
- October 1 to October 2 - Yom Kippur
- October 2 - Dussehra
- October 13 - National Indigenous Peoples Day
- October 6 to October 13 - Sukkot
- October 15 - International Pronouns Day
- October 19 to October 20 - Diwali
- October 31 to November 1 - Samhain
November
- November 1 to November 31 -National Native American Heritage Month
- November 1 to November 2 - Dia de los Muertos
- November 11 - Veteran’s Day
- November 13 to November 19 - Transgender Awareness Week
- November 20 - Transgender Day of Remembrance
December
- December 3 - International Day of Persons with Disabilities
- December 14 to December 22 - Hanukkah
- December 21 to January 1 - Yule Winter Solstice
- December 25 - Christmas Day
- December 26 to January 1 - Kwanzaa