December 15: National Days, Holidays & Observances
December 15 is day 349 of the year, with 16 days left until the year ends. In 2026 it falls on a Tuesday. There are 2 observances on this date.
Bill of Rights Day
Bill of Rights Day on December 15 marks the 1791 ratification of the first ten amendments. History, timeline, all 10 amendments in…
International Tea Day
International Tea Day is December 15 in tea-growing countries. Its 2005 origin, how it differs from the UN May 21 date, tea…