World AIDS Day
2nd:
International Day for the Abolition of Slavery (A/RES/317(IV))
3rd:
International Day of Persons with Disabilities (A/RES/47/3)
5th:
International Volunteer Day for Economic and Social Development (A/RES/40/212)
9th:
International Anti-Corruption Day (A/RES/58/4)
10th:
Human Rights Day (A/RES/423 (V))
11th:
International Mountain Day (A/RES/57/245)
12th:
Poinsettia Day
18th:
International Migrants Day (A/RES/55/93)
21st:
First Day of Winter
24th:
Christmas Eve
25th:
Christmas Day
26th:
Boxing Day
Kwanzaa Begins
31st:
New Year's Eve
http://www.un.org/en/sections/observances/international-days/
https://www.theteacherscorner.net/calendars/december.php