| Date | Observance |
| January 1 | New Year’s Day |
| January 4 | World Braille Day |
| January 9 | Pravasi Bharatiya Divas / NRI Day |
| January 10 | World Hindi Day |
| January 12 | National Youth Day (Swami Vivekananda’s Birthday) |
| January 14 / 15 | Makar Sankranti |
| January 15 | Indian Army Day |
| January 23 | Parakram Diwas / Netaji Subhas Chandra Bose Jayanti |
| January 24 | National Girl Child Day |
| January 25 | National Tourism Day |
| January 26 | Republic Day |
| January 27 | International Holocaust Remembrance Day |
| January 28 | Birth Anniversary of Lala Lajpat Rai |
| January 30 | Martyrs’ Day (Mahatma Gandhi’s Death Anniversary) |
| January 30 | World Leprosy Eradication Day |
| February 2 | World Wetlands Day |
| February 4 | World Cancer Day |
| February 5 | Sant Ravidas Jayanti |
| February 6 | International Day of Zero Tolerance to Female Genital Mutilation |
| February 10 | National Deworming Day |
| February 11 | International Day of Women and Girls in Science |
| February 12 | National Productivity Day |
| February 13 | World Radio Day |
| February 14 | Valentine’s Day |
| February 19 | Chhatrapati Shivaji Maharaj Jayanti |
| February 20 | World Day of Social Justice |
| February 21 | International Mother Language Day |
| February 22 | World Thinking Day |
| February 24 | Central Excise Day |
| February 27 | World NGO Day |
| February 28 | National Science Day |
| March 1 | Zero Discrimination Day |
| March 3 | World Wildlife Day |
| March 4 | National Safety Day |
| March 6 | Maha Shivaratri |
| March 8 | International Women’s Day |
| March 14 | Pi Day |
| March 15 | World Consumer Rights Day |
| March 16 | National Vaccination Day |
| March 18 | Ordnance Factories Day |
| March 20 | International Day of Happiness |
| March 21 | International Day of Forests |
| March 21 | World Poetry Day |
| March 22 | World Water Day |
| March 23 | Shaheed Diwas (Martyrs’ Day) |
| March 23 | World Meteorological Day |
| March 24 | World Tuberculosis Day |
| March 27 | World Theatre Day |
| April 1 | Utkal Divas (Odisha Day) |
| April 2 | World Autism Awareness Day |
| April 4 | International Day for Mine Awareness and Assistance in Mine Action |
| April 5 | National Maritime Day |
| April 7 | World Health Day |
| April 10 | World Homeopathy Day |
| April 11 | National Safe Motherhood Day |
| April 13 | Jallianwala Bagh Massacre Day |
| April 14 | B.R. Ambedkar Jayanti |
| April 17 | World Hemophilia Day |
| April 18 | World Heritage Day |
| April 21 | National Civil Services Day |
| April 22 | Earth Day |
| April 23 | World Book and Copyright Day |
| April 24 | National Panchayati Raj Day |
| April 25 | World Malaria Day |
| April 26 | World Intellectual Property Day |
| April 28 | World Day for Safety and Health at Work |
| April 29 | International Dance Day |
| April 30 | Ayushman Bharat Diwas |
| May 1 | Maharashtra Day |
| May 1 | International Workers’ Day (Labour Day) |
| May 3 | World Press Freedom Day |
| May 4 | International Firefighters’ Day |
| May 5 | World Hand Hygiene Day |
| May 7 | World Athletics Day |
| May 8 | World Red Cross Day |
| May 8 | World Thalassemia Day |
| May 11 | National Technology Day |
| May 12 | International Nurses Day |
| May 15 | International Day of Families |
| May 17 | World Telecommunication and Information Society Day |
| May 18 | International Museum Day |
| May 20 | World Metrology Day |
| May 21 | National Anti-Terrorism Day |
| May 22 | International Day for Biological Diversity |
| May 24 | Commonwealth Day |
| May 29 | International Day of UN Peacekeepers |
| May 31 | World No Tobacco Day |
| June 1 | Global Day of Parents |
| June 1 | World Milk Day |
| June 3 | World Bicycle Day |
| June 4 | International Day of Innocent Children Victims of Aggression |
| June 5 | World Environment Day |
| June 7 | World Food Safety Day |
| June 8 | World Oceans Day |
| June 12 | World Day Against Child Labour |
| June 14 | World Blood Donor Day |
| June 15 | World Elder Abuse Awareness Day |
| June 17 | World Day to Combat Desertification and Drought |
| June 20 | World Refugee Day |
| June 21 | International Day of Yoga |
| June 21 | World Music Day |
| June 23 | United Nations Public Service Day |
| June 23 | International Olympic Day |
| June 26 | International Day Against Drug Abuse and Illicit Trafficking |
| June 29 | National Statistics Day |
| June 30 | International Asteroid Day |
| July 1 | National Doctors’ Day |
| July 1 | GST Day |
| July 2 | World UFO Day |
| July 6 | World Zoonoses Day |
| July 7 | World Chocolate Day |
| July 11 | World Population Day |
| July 12 | Malala Day |
| July 15 | World Youth Skills Day |
| July 17 | World Day for International Justice |
| July 18 | Nelson Mandela International Day |
| July 20 | World Chess Day |
| July 22 | National Flag Adoption Day |
| July 26 | Kargil Vijay Diwas |
| July 28 | World Hepatitis Day |
| July 28 | World Nature Conservation Day |
| July 29 | International Tiger Day |
| July 30 | World Day Against Trafficking in Persons |
| July 31 | World Ranger Day |
| August 1 | World Breastfeeding Week (Aug 1-7) |
| August 6 | Hiroshima Day |
| August 9 | Quit India Day |
| August 12 | International Youth Day |
| August 15 | Independence Day |
| August 19 | World Humanitarian Day |
| August 29 | National Sports Day |
| September 5 | Teachers’ Day |
| September 8 | International Literacy Day |
| September 14 | Hindi Diwas |
| September 15 | Engineers Day |
| September 16 | World Ozone Day |
| September 21 | International Day of Peace |
| September 27 | World Tourism Day |
| October 1 | International Day of Older Persons |
| October 2 | Gandhi Jayanti |
| October 4 | World Animal Welfare Day |
| October 5 | World Teachers’ Day |
| October 8 | Indian Air Force Day |
| October 10 | World Mental Health Day |
| October 10 | National Post Day |
| October 11 | International Day of the Girl Child |
| October 16 | World Food Day |
| October 24 | United Nations Day |
| October 31 | Rashtriya Ekta Diwas (National Unity Day) |
| November 1 | Karnataka Rajyotsava |
| November 7 | National Cancer Awareness Day |
| November 11 | National Education Day |
| November 14 | Children’s Day |
| November 16 | National Press Day |
| November 19 | National Integration Day |
| November 20 | Universal Children’s Day |
| November 26 | Constitution Day |
| December 1 | World AIDS Day |
| December 3 | International Day of Persons with Disabilities |
| December 4 | Indian Navy Day |
| December 7 | Armed Forces Flag Day |
| December 10 | Human Rights Day |
| December 18 | Minorities Rights Day (India) |
| December 22 | National Mathematics Day |
| December 23 | Kisan Diwas |
| December 24 | National Consumer Rights Day |