December 1 – World AIDS Day: Raises awareness about HIV/AIDS and supports those living with the condition.
December 3 – International Day of Persons with Disabilities: Advocates for the rights and well-being of individuals with disabilities.
December 5 – World Soil Day: Highlights the importance of healthy soil and sustainable soil management.
December 10 – Human Rights Day: Globally celebrated, it promotes and raises awareness of human rights issues.
December 11 – International Mountain Day: Promotes awareness about the importance of mountains to ecosystems and cultures.
December 18 – International Migrants Day: Recognizes the contributions of migrants and promotes their rights.
December 20 – International Human Solidarity Day: Encourages unity in diversity and reminds of the need to build a fair global society.
December 25 – Christmas Day: Celebrated globally as a major holiday, especially in Christian communities.