The following is a list of notable observed commemorative days used by various governments, groups and organizations to raise awareness of an issue, commemorate a group or event, or celebrate something.
| Month | Date | Observed As |
| January | 1-Jan | Global Family Day |
| 9-Jan | NRI Day | |
| 10-Jan | World Laughter Day | |
| 12-Jan | National Youth Day | |
| 15-Jan | Army Day | |
| 25-Jan | National Voters Day | |
| 25-Jan | National Tourism Day | |
| 26-Jan | India’s Republic Day, International Customs Day | |
| 28-Jan | Data Protection Day | |
| 30-Jan | Martyrs’ Day; World Leprosy Eradication Day | |
| February | February 2nd Sunday | World Marriage Day |
| 4-Feb | World Cancer Day | |
| 6-Feb | International Day against Female Genital Mutilation | |
| 12-Feb | World Day of the Sick, Darwin Day | |
| 13-Feb | World Radio day | |
| 20-Feb | World Day of Social Justice | |
| 21-Feb | International Mother Language Day | |
| 22-Feb | World Scout Day | |
| 24-Feb | Central Excise Day | |
| 28-Feb | National Science Day | |
| March | March 2nd Monday | Commonwealth Day |
| March 2nd Thursday | World Kidney Day | |
| 4-Mar | World Day of the Fight Against Sexual Exploitation | |
| 8-Mar | International Women’s Day | |
| March 2nd Thursday | World Kidney Day | |
| 15-Mar | World Consumer Rights Day | |
| 16-Mar | National Vaccination Day | |
| 18-Mar | Ordnance Factories Day (India) | |
| 20-Mar | World Sparrow Day | |
| 20-Mar | World Day of Theatre for Children and Young People | |
| 21-Mar | World Forestry Day | |
| 21-Mar | International Day for the Elimination of Racial Discrimination | |
| 22-Mar | World Water Day | |
| 23-Mar | World Meteorological Day/ World Earth Day | |
| 24-Mar | World TB Day | |
| 27-Mar | World Drama Day | |
| April | 2-Apr | World Autism Awareness Day |
| 5-Apr | International Day for Mine Awareness; National Maritime Day | |
| 7-Apr | World Health Day | |
| 17-Apr | World Haemophilia Day | |
| 18-Apr | World Heritage Day,World Amateur Radio Day | |
| 21-Apr | Secretaries’ Day | |
| 21-Apr | National Civil Services Day | |
| 22-Apr | Earth Day | |
| 23-Apr | World Book and Copyright Day | |
| 25-Apr | World Malaria Day | |
| 26-Apr | World Intellectual Property Day | |
| 29-Apr | International Dance Day | |
| May | 1-May | Workers’ Day (International Labour Day) |
| May 1st Tuesday | World Asthma Day | |
| 3-May | Press Freedom Day; World Asthma Day | |
| May, 2nd Sunday | Mother’s Day | |
| 4-May | Coal Miners’ Day | |
| 8-May | World Red Cross Day | |
| 9-May | World Thalassaemia Day | |
| 11-May | National Technology Day | |
| 12-May | World Hypertension Day; International Nurses Day | |
| 14-Mar | World Migratory day | |
| 15-May | International Day of the Family | |
| 17-May | World Telecommunication Day | |
| 18-May | International Museum Day | |
| 21-May | Anti-Terrorism day | |
| 22-May | International Day for Biological Diversity | |
| 24-May | Commonwealth Day | |
| 28-May | World Hunger Day | |
| 31-May | Anti-tobacco Day | |
| June | 4-Jun | International Day of Innocent Children, Victims of Aggression |
| 5-Jun | World Environment Day | |
| June, 3rd Sunday | Father’s Day | |
| 8-Jun | World Ocean Day | |
| 12-Jun | World Day against Child Labour | |
| 14-Jun | World Blood Donor Day | |
| 15-Jun | World Elder Abuse Awareness Day | |
| 17-Jun | World Day to Combat Desertification and Drought | |
| 20-Jun | World Refugee Day | |
| 21-Jun | World Music Day | |
| 23-Jun | International Olympic Day,UN Public Service Day | |
| 26-Jun | International Day against Drug Abuse and Illicit Trafficking | |
| 27-Jun | International Diabetes Day | |
| July | 1-Jul | Doctor’s Day |
| 6-Jul | World Zoonoses Day | |
| 11-Jul | World Population Day | |
| 12-Jul | Malala Day | |
| 18-Jul | Nelson Mandela International Day | |
| 30-Jul | International Day of Friendship | |
| August | August 1st Sunday | International Friendship Day |
| 3-Aug | International Friendship Day | |
| 6-Aug | Hiroshima Day | |
| 6-Aug | Organ Donation Day | |
| 7-Aug | Forgiveness Day | |
| 8-Aug | World Senior Citizen’s Day | |
| 9-Aug | Quit India Day, Nagasaki Day | |
| 12-Aug | International Youth Day | |
| 15-Aug | Indian Independence Day | |
| 18-Aug | Intl. Day of the World’s Indigenous Peoples | |
| 19-Aug | Photography Day | |
| 19-Aug | World Humanitarian Day | |
| 20-Aug | Rajiv Gandhi Sadbhavana Divas | |
| 29-Aug | National Sports Day | |
| September | 2-Sep | Coconut Day |
| 5-Sep | Teachers’ Day | |
| 5-Sep | International day of charity | |
| 8-Sep | International Literacy Day (UNESCO) | |
| 14-Sep | Hindi Diwas, World First | |
| Aid Day | ||
| 15-Sep | Engineers’ Day | |
| 16-Sep | World Ozone Day | |
| 21-Sep | Alzheimer’s Day; Day for Peace & Non- violence (UN) | |
| 22-Sep | Rose Day (Welfare of cancer patients) | |
| 25-Sep | Social Justice Day | |
| 26-Sep | Day of the Deaf | |
| 27-Sep | World Tourism Day | |
| 28-Sep | World Rabies Day | |
| 29-Sep | World Heart Day | |
| October | 1-Oct | International Day for the Elderly |
| 2-Oct | Gandhi Jayanthi; International Day of Non-Violence | |
| 3-Oct | World Habitat Day | |
| 4-Oct | World Animal Welfare Day | |
| 8-Oct | Indian Air Force Day | |
| 9-Oct | World Post Office Day | |
| 10-Oct | National Post Day | |
| October, 2nd Thursday | World Sight Day | |
| 11-Oct | International Day of the Girl Child | |
| 12-Oct | World Arthritis Day | |
| 13-Oct | UN International Day for Natural Disaster Reduction | |
| 14-Oct | World Standards Day | |
| 15-Oct | World White Cane Day (guiding the blind), International Day of Rural women | |
| 16-Oct | World Food Day | |
| 17-Oct | The International Day for the Eradication of Poverty | |
| 20-Oct | World Statistics Day, World Osteoporosis Day | |
| 21-Oct | Global Iodine Deficiency Disorders Prevention Day | |
| 24-Oct | UN Day; World Development Information Day, World Polio Day | |
| 28-Oct | International Animation Day | |
| 30-Oct | World Thrift Day | |
| November | 5-Nov | World Radiography Day |
| 9-Nov | Legal Services Day | |
| 12-Nov | World Pneumonia Day, Public Service Broadcasting Day | |
| 14-Nov | Children’s Day; World Diabetes Day | |
| 16-Nov | International Day for Tolerance | |
| 17-Nov | National Epilepsy Day; National Journalism Day | |
| 19-Nov | Citizens’ Day, World Toilet Day, National Integration Day | |
| 20-Nov | Africa Industrialisation Day | |
| 21-Nov | World Television Day; World Fisheries day | |
| 25-Nov | International Day for Elimination of Violence against Women | |
| 26-Nov | Constitution Day | |
| 29-Nov | International Day of Solidarity with Palestinian People | |
| December | 1-Dec | World AIDS Day |
| 2-Dec | World Computer Literacy Day | |
| 3-Dec | World Day of the Handicapped | |
| 4-Dec | Indian Navy Day | |
| 5-Dec | International Volunteer Day | |
| 7-Dec | Armed Forces Flag Day; International Civil Aviation Day | |
| 10-Dec | Human Rights Day; Intl. Children’s Day of Broadcasting | |
| 14-Dec | World Energy Day | |
| 18-Dec | Minorities Rights Day (India) | |
| 22-Dec | National Mathematics Day | |
| 23-Dec | Kisan Divas (Farmer’s Day) (India) |
