Holy days, Heritage, and History Months

This calendar includes a listing of holy days / holidays, heritage, history and awareness months. This document is meant to serve as a resource and tool to help promote awareness and share information. This is not exhaustive of all major holy days in every religious tradition and some variances of dates will exist due to regional differences. Our CU community is encouraged to find opportunities to learn about and honor identities and cultures year-round as a part of our on-going commitment to advancing diversity, equity, and inclusion.

Points to remember

  • Dates are assembled from several calendars. Lunar calendars vary based on region and practice.
  • ▲ Denotes a day that may have a work restriction and/or may be commonly taken off.
  • ■ Denotes a day that may commonly be observed with fasting.
  • Common dietary considerations for event planning
    • Kosher refers to the dietary guidelines of Jewish law which apply daily throughout the year. Restrictions include pork, shellfish (fish is usually allowed) and mixing meat with dairy.
    • Halal refers to the foods permitted according to Islamic dietary law throughout the year. Meat should be prepared in a specific way and will be certified. Restrictions include alcohol and pork.
    • Vegetarian is a diet that does not include meat and may include restrictions on other animal products.
    • Pescatarian is a vegetarian diet that includes fish or other aquatic animals.
    • Vegan refers to a diet that does not include any meat or food derived from animals (e.g., eggs, dairy products, etc.).
    • Gluten-free refers to a diet that excludes any food that contains gluten, a protein found in wheat, barley, and rye.
    • Lactose intolerance
    • Nut allergies (peanuts and/or tree nuts)
    • Shellfish allergies

Note: If you see a mistake or something missing on the document, please reach out to systemdei@cu.edu

2023

January

Month-long:

  • National Mentoring Month
  • Slavery and Human Trafficking Prevention Month
  • Stalking Awareness Month

Days:

1/1 New Year’s Day U.S. federal holiday  
1/7 Eastern Orthodox Nativity Orthodox Christianity  
1/11 National Human Trafficking Awareness Day U.S. observed  
1/16 Martin Luther King Jr. Day U.S. federal holiday  
1/16 National Religious Freedom Day U.S. observed  
1/22 Lunar New Year  
1/27 International Holocaust Remembrance Day United Nations  

February

Month-long:

Days:

2/1 National Freedom Day    
2/14 Valentine’s Day    
2/15 Chinese Lantern Festival    
2/15 Parinirvana Buddhism  
2/17-18 Lailat al Miraj Islam  
2/18 Maha Shivaratri Hinduism ▲ ■
2/20 President’s Day U.S. federal holiday  
2/21 Mardi Gras    
2/22 Ash Wednesday Christianity
2/23 – 4/6 Lent Christianity

March

Month-long:

Days:

2/23 – 4/6 Lent Christianity
3/3 Employee Appreciation Day    
3/6-3/7 Purim Judaism  
3/7-3/8 Laylat al Bara’at Islam  
3/8 International Women’s Day United Nations  
3/8 Holi Hinduism  
3/17 St. Patrick’s Day    
3/21 International Day for the Elimination of Racial Discrimination United Nations  
3/21 Norwuz    
3/22 Anniversary of Boulder King Sooper shooting Colorado  
3/22-4/21 Ramadan Islam
3/25 International Day of Remembrance of the Victims of Slavery and Transatlantic Slave Trade United Nations  
3/31 International Transgender Day of Visibility GLSEN  
3/31 Cesar Chavez Day State of Colorado holiday  

April

Month-long:

Days:

2/23 – 4/6 Lent Christianity
4/2 Equal Pay Day U.S. observed  
3/22-4/21 Ramadan Islam
4/2 World Autism Awareness Day    
4/2 Palm Sunday Christianity  
4/5-4/13 Passover Judaism
4/6 International Asexuality Day    
4/7 Good Friday Christianity ▲ ■
4/9 Easter Christianity
4/14 Day of Silence GSLEN  
44/16 Eastern Orthodox Pascha Orthodox Christianity  
4/18 Yom HaShoah / Holocaust Remembrance Day Judaism  
4/18 Laylat al-Qadr Islam

 

4/20 Anniversary of Columbine HS Massacre Colorado  
4/21-22 Eid al-Fitr Islam
4/22 Earth Day U.S. observed  
4/26 Administrative Professionals Day
 
U.S. observed  
4/26 Denim Day For Sexual Assault Awareness Month  

 

May

June

Month-long:

Days:

6/18 Father’s Day U.S. day of observance  
6/19 Juneteenth U.S. federal holiday  
6/20 World Refugee Day United Nations  
6/24-6/25 Denver Pride Colorado  
6/26-7/1 The Hajj Islam  
7/28-7/29 Eid al-Adha Islam

July

Month-long:

Days:

6/26-7/1 The Hajj Islam  
7/4 Independence Day U.S. federal holiday  
7/14 International Non-binary People’s Day Human Rights Campaign  
7/20 Anniversary of Aurora theater shooting Colorado  
7/18 Nelson Mandela International Day United Nations  
7/18-19 Hijri New Year / Islamic New Year Islam  
7/26 National Disability Independence Day U.S. Observed  
7/26-27 Tisha B’Av Judaism

August

Month-long:

  • National Back to School Month

Days:

>8/1 Colorado Day Colorado  
8/2 National Night Out U.S. observed  
8/9 International Day of the World’s Indigenous Peoples United Nations  
8/19 World Humanitarian Day United Nations  
8/23 International Day for the Remembrance of the Slave Trade and its Abolition United Nations Educational, Scientific and Cultural Organization (UNESCO)  
8/26 Women’s Equality Day U.S. observed  

September

Month-long:

Days:

9/5 Labor Day U.S. federal holiday  
9/5-6 Arbaeen Day Islam  
9/6-7 Krishna Janmashtami Hinduism  
9/10 World Suicide Prevention Day World Health Organization  
9/11 Patriot Day / Anniversary of 9/11 U.S. day of observance  
9/15-17 Rosh Hashanah Judaism
9/24-25 Yom Kippur Judaism ▲ ■
9/26-27 Mawlid Islam  
9/29-10/6 Sukkot Judaism
9/29-10/14 Pitru Paksha Hinduism  
9/30 National Public Lands Day U.S. day of observance  

October

November

Month-long:

Days:

11/1 All Saints Day Christianity  
11/1-2 Día de los Muertos Mexico, many Latinx countries, U.S.  
11/8 National STEM and STEAM Day    
11/11 Veterans Day U.S. federal holiday  
11/8 Intersex Day of Solidarity    
11/12 Diwali Hinduism
11/20 Transgender Day of Remembrance GLAAD  
11/23 Thanksgiving U.S. federal holiday  
11/23 National Day of Mourning / Indigenous People’s Sunrise Ceremony U.S. observation  
11/24 Native American Heritage Day U.S. observation  
11/25 International Day for the Elimination of Violence Against Women United Nations  
11/29 Anniversary of Sand Creek Massacre Colorado  

December

Month-long: none

Days:

12/1 World AIDS Day Global observance  
12/3 International Day of Persons with Disabilities United Nations  
12/7 National Pearl Harbor Remembrance Day U.S. observance  
12/8 Bodhi Day Buddhism
12/10 International Human Rights Day United Nations  
12/12 Feast of Our Lady of Guadalupe Catholicism  
12/16-24 Las Posadas Mexico and additional parts of Latin America  
12/7-15 Hanukkah Judaism  
12/21-1/1 Yule    
12/25 Christmas U.S. federal holiday
12/26-1/1 Kwanzaa African American and Pan-African holiday
12/31 New Year’s Eve