January--------------------------------------------------------
- New Year's Day - January 1
- Indian Republic Day - January 26
- Australia Day - January 26
- Street Children's Day - January 31
- Martin Luther King, Jr. Day – 3rd Monday of January
- World Cancer Day - February 4
- Sri Lanka Independence Day - February 4
- International Day of Zero Tolerance to Female Genital Mutilation - February 6
- Waitangi Day (New Zealand) - February 6
- Darwin Day – February 12
- Hug Day - February 13
- Valentine's Day – February 14
- International Mother Language Day – February 21
- Thinking Day - February 22
- National Science Day (India) – February 28
- Rare Disease Day – February 28
- Washington's Birthday - third Monday of February
- Saint David's Day - March 1 (Wales)
- Texas Independence Day – March 2
- International Women's Day – March 8
- Pi Day – March 14
- Saint Patrick's Day – March 17
- World Sparrow Day – March 20
- International Day for the Elimination of Racial Discrimination – March 21
- World Down Syndrome Day- March 21
- World Poetry Day – March 21
- World Water Day - March 22
- Youm-e-Pakistan (Pakistan Day) - March 23
- World Tuberculosis Day - March 24
- Purple Day - March 26
- Bangladesh Independence Day – March 26
- April Fools Day - April 1
- World Autism Awareness Day - April 2
- World Health Day - April 7
- International Romani Day - April 8
- Day of Silence - April 15
- Day of Dialogue - April 15
- Foursquare Day - April 16
- World Hemophilia Day - April 17
- Earth Day - April 22
- St George's Day- April 23
- World Book Day - April 23
- ANZAC Day - April 25
- Liberation Day (Italy) - April 25
- World Malaria Day - April 25
- World Intellectual Property Day - April 26
- International Jazz Day - April 30
- International Workers' Day - May 1
- May Day - May 1
- World Press Freedom Day - May 3
- Remembrance of the Dead - May 4
- Star Wars Day - May 4
- Greenery Day - May 4
- International Midwives' Day - May 5
- International No Diet Day - May 6
- Victory in Europe Day - May 7/8
- Military Spouse Appreciation Day - May 11
- International Nurses Day - May 12
- International Day of Families - May 15
- International Day Against Homophobia and Transphobia - May 17
- World Information Society Day - May 17
- International Day for Biological Diversity - May 22
- International Missing Children's Day - May 25
- Towel Day - May 25
- National Masturbation Day-May 28
- Mother's Day – Second Sunday of May in many nations
- World No Tobacco Day - May 31
- World Environment Day - June 5
- D-Day - June 6
- World Oceans Day - June 8
- Independence Day (Philippines) - June 12
- World Blood Donor Day - June 14
- Autistic Pride Day - June 18
- World Refugee Day - June 20
- World Hydrography Day - June 21
- World Music Day - June 21
- International Day against Drug Abuse and Illicit Trafficking - June 26
- Father's Day – Third Sunday of June in the U.S., United Kingdom and others
- Queen's Official Birthday – first, second or third Saturday in June
- National Cancer Survivors Day (USA) - first Sunday of June
- Canada Day - July 1
- Independence Day (United States) - July 4
- World Population Day - July 11
- Pi Approximation Day - July 22
- International Tiger Day - July 29
- International Youth Day - August 12
- International Lefthanders Day - August 13
- Victory over Japan Day - August 14/15
- Youm-e-Azadi (Pakistan Independence Day) - August 14
- Indian Independence Day - August 15
- Bennington Battle Day - August 16
- Indonesian Independence Day - August 17
- World Mosquito Day - August 20
- Indian Akshay Urja Day - August
- European Day of Remembrance for Victims of Stalinism and Nazism – August 23
- International Beer Day - First Friday of August
- Labor Day (US) - First Monday of the month
- Brazilian Independence Day - September 7
- Engineer's Day (India) - September 15
- International Talk Like a Pirate Day - September 19
- European Day of Languages - September 26
- World Contraception Day - September 26.[1]
- World Rabies Day - September 28
- International Coffee Day - September 29
- World Vegetarian Day – October 1
- German Unity Day – October 3
- World Animal Day – October 4
- German-American Day – October 6
- National Hug Day (USA) - October 8
- World Mental Health Day - October 10
- Pregnancy and Infant Loss Remembrance Day - October 15
- Global Handwashing Day - October 15
- World Food Day - October 16
- Mole Day – October 23
- Labour Day (New Zealand) - October 27
- National Cat Day (USA) – October 29
- Halloween – October 31
- World Vegan Day – November 1
- All Saints' Day – November 1
- All Souls' Day – November 2
- Bonfire Night (also Guy Fawkes Night) – November 5
- Armistice Day (also Remembrance Day) – November 11
- Veterans Day – November 11
- Children's Day (India) – November 14
- World Diabetes Day – November 14
- National Day (Oman) - November 18
- International Men's Day – November 19
- World Toilet Day - November 19[2]
- Transgender Day of Remembrance – November 20
- Cities for Life Day – November 30
- Self-injury Awareness Day - November 30
- Thanksgiving (United States) – Fourth Thursday of November
- Melbourne Cup Day – 1st Tuesday in November
- World AIDS Day – December 1
- United Nations' International Day of Persons with Disabilities – December 3
- International Volunteer Day - December 5
- Human Rights Day - December 10
- Taylor Swift Day- December 13th
- Christmas Eve - December 24
- Christmas Day – December 25
- Quaid-e-Azam Muhammad Ali Jinnah Day - December 25 (Birthday of the founder of Pakistan)
- Boxing Day – December 26
- Kwanzaa – December 26 to January 1
- New Year's Eve - December 31