SEPTEMBER:
Hispanic Heritage Month (September 15-October 15)
Paryushan Parva (September 4- September 11, 2021)
Labor Day (September 6, 2021)
Rosh Hashanah (begins at sundown September 6 & concludes at sundown September 8, 2021)
Yom Kippur (begins at sundown September 15 & ends at sundown 16, 2021)
Mexican Independence Day (September 16, 2021)
Sukkot (September 20-27)
Mid-Autumn Festival (September 21, 2021)
Shemini Atzeret & Simchat Torah (September 28 & 29)

OCTOBER:
LGBTQIA+ History Month
Chinese Independence Day (October 1, 2021)
Mental Awareness Week (October 5-9, 2021)
National Coming Out Day, October 11 (2021)
International Day of the Girl Child (October 11, 2021)
Indigenous People’s Day (October 11, 2021)
Eid Milad un-Nabi, celebration of the birthday of the Prophet Muhammad (October 18-19, 2021)
International Pronouns Day (October 20, 2021)

NOVEMBER:
Native American Heritage Month
Diwali (November 4, 2021)
The anniversary of birth of The Báb (November 6, 2021)
The anniversary of the birth of Bahá’u’lláh (November 7, 2021)
Veterans Day (November 11, 2021)
Thanksgiving Day (November 25, 2021)
Hanukkah (November 28-December 6, 2021)

DECEMBER:
World AIDs Day (December 1, 2021)
Bodhi Day (December 8 ,2021)
Winter Solstice (December 21, 2021)
Christmas Day (December 25, 2021)
Kwanzaa (December 26-January 1, 2021/2022)

2022

JANUARY:
New Year's Day
Makar Sankranti (January 14, 2022)
Martin Luther King Jr. Day (January 17, 2022)
International Day of Racial Healing (January 18, 2022)
Mahayana New Year (three days from the sighting of the first full moon ~January 18-20, 2022)
Holocaust Remembrance (January 27, 2022)

FEBRUARY:
Black History Month
Lunar New Year (February 1, 2022)
Vasanta Panchami (February 5, 2022)
Parinirvana Day (February 15, 2022)
Washington’s Birthday (February 21, 2022)
Ayyám-i-Há (February 25-March 1, 2022)
Maha Shivaratri (February 28, 2022)

MARCH
National Women’s History Month
Developmental Disability Month
Gender Equality Month
Mardi Gras (March 1, 2022)
Ash Wednesday (March 2, 2022)
Tibetan New Year (March 3, 2022)
International Women’s Day (March 8, 2022)
Purim (March 16-17, 2022)
Shab-e-Barat (March 18-19, 2022)
Holi (March 19, 2022)
Naw-Rúz (March 20, 2022)
Norooz/Persian New Year (March 21-March 22, 2022)
International Transgender Day of Visibility (March 31, 2022)

APRIL:
National Arab Heritage Month
Chaitra Navratri (April 2-11, 2022)
Zimbabwe Independence Day (April 18)
Ramadan (April 2-May 1, 2022)
National Day of Silence for LGBTQ (April 8, 2022)
Ayambil Oli (April 8-15, 2022)
Mahavir Jayanti (April 14, 2022)
Good Friday (April 15, 2022)
Passover (April 15-April 23, 2022)
Easter (April 17, 2022)
First Day of Ridván (April 20, 2022)
Earth Day (April 22, 2022)
Orthodox Easter Sunday (April 24, 2022)
Yom HaShao/Holocaust Remembrance Day (April 27-28, 2022)
Ninth Day of Ridván (April 29, 2022)
Laylat al-Qadr, 27th Day of Ramadan (April 29, 2022)

MAY:
AAPI Heritage Month
Jewish American Heritage Month
Mental Health Awareness Month
Twelfth Day of Ridván (May 1, 2022)
Beltane (May 1, 2022)
Eid al-Fitr (May 2-3, 2022)
Cinco de Mayo (May 5, 2022)
Siddartha Gautama's (Buddha) Birthday (May 8)
Wesak/Buddha Day/Visakha Puja (May 15, 2022)
International Day Against Homophobia, Transphobia, and Biphobia (May 17, 2022)
The Declaration of the Báb (May 24, 2022)
Ascension of Bahá’u’lláh (May 29, 2022)
Memorial Day (May 30, 2022)

JUNE:
LGBTQIA Pride Month
Immigrant Heritage Month
Shavuot (June 4-6, 2022)
Juneteenth (June 19, 2022)
Summer Solstice (June 21, 2022)

JULY:
Independence Day (July 4, 2022)
International Non-binary Peoples Day (July 14, 2022)
Nelson Mandela International Day (July 18, 2022)
International Day of Friendship (July 30, 2022)