December – the 12th month in the Gregorian calendar – carries both symbolic and practical significance around the world. As the year draws to a close, governments, institutions and global bodies take stock of progress, mark key milestones and review commitments related to health, human rights, climate action and economic development. It is also the start of winter in the Northern Hemisphere, a period often associated with festive sentiment and higher consumer spending, making it an important month for businesses, tourism and retail. In India, December is culturally prominent, as various regions consider this period auspicious for weddings and community gatherings, contributing to economic activity in the apparel, jewellery, hospitality and travel sectors. The month also features national celebrations, including Vijay Diwas and Kisan Diwas, which commemorate India’s military history and recognize the role of farmers in maintaining the country’s food security. Global awareness days observed in December now align with broader policy conversations. World AIDS Day shines a spotlight on public health investments and the ongoing effort to combat HIV/AIDS. International Human Rights Day reinforces the importance of democratic values ​​and social equality. Days like International Mountain Day and National Energy Conservation Day reflect climate-related priorities and natural resource management—critical themes for nations navigating the energy transition. Date Day 1 Dec World Aids Day 2 Dec National Pollution Control Day, International Day for the Abolition of Slavery 3 Dec International Day of Persons with Disabilities 4 Dec International Day of Banks, International Day Against Unilateral Coercive Measures 5 Dec World Soil Day, International Volunteer Day for Economic and Social Development Micro 6 Dec. Flag Day, International Civil Aviation Day 8 Dec Bodhi Day 9 Dec International Day of Anti-Corruption, International Day of Commemoration and Dignity of the Victims of the Crime of Genocide and of the Prevention of this Crime 10 Dec Human Rights Day 11 Dec International Mountain Day, UNICEF Day of Universal Health 12 Dec International Day of Health 12 Dec International Day of Health Deck 12 Dec International Day of Health 14 National Energy Conservation Day 16 Dec Vijay Diwas 18 Dec Minority Rights Day in India, International Migrants Day, Arabic Language Day 19 Dec Goa Liberation Day 20 Dec International Human Solidarity Day 21 Dec World Saree Day, Winter Solstice, World Basketball Day, World Meditation Day 2 Ki4 Dec. National Day 2 Ki2 Dec. Consumer Rights Day 25 December Christmas, Good Governance Day 26 December Veer Bal Diwas, Boxing Day 27 December International Day of Epidemic Preparedness 31 December New Year’s Eve Other celebrations, including International Anti-Corruption Day and International Day of Persons with Disabilities, highlight governance, inclusion and workplace reforms, and underline the International Mobility Reform Day and underline international mobility reforms. dynamics. Whether linked to global advocacy or rooted in national significance, these days serve as reminders of the economic, social and cultural factors that shape the latter part of the year. Here is a comprehensive list of important national and international days observed in December 2025.