Monday, December 22, 2025 is a Monday. It is day 356 of 2025 (97.5% through the year), ISO week 52, in Q4.
Calendar Specifications
Monday, December 22, 2025 combines practical calendar facts with a wider view of the day: 2010: The United States repealed its "don't ask, don't tell" policy on gay, lesbian and bisexual people in the military (signing pictured).. Use it to check the date, plan across time zones, and scan the observances and historical markers attached to December 22.
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Historical Milestones
The United States repealed its "don't ask, don't tell" policy on gay, lesbian and bisexual people in the military (signing pictured).
Don't Ask, Don't Tell Repeal Act of 2010 →A dike ruptured at a waste containment area for a coal-fired power plant in Kingston, Tennessee, releasing 1.1 billion gallons (4.2 million m3) of coal fly ash slurry (aftermath pictured) in the largest industrial spill in US...
Kingston Fossil Plant coal fly ash slurry spill →Burhanuddin Rabbani of the Northern Alliance handed over power in Afghanistan to the interim government headed by Hamid Karzai.
Burhanuddin Rabbani →Richard Reid unsuccessfully attempted to detonate a bomb in his shoe on a transatlantic flight from Paris to Miami.
Richard Reid →Hussein Farrah Aidid relinquished the disputed title of President of Somalia.
Hussein Farrah Aidid →Brazilian unionist and environmental activist Chico Mendes was murdered at his home in Xapuri.
Trade union →While riding a New York City Subway train, Bernhard Goetz shot four African-American youths who had attempted to rob him, sparking a nationwide debate on vigilantism, racism, and the legal limits of self-defense.
New York City Subway →Chaired by Sjafruddin Prawiranegara, the Emergency Government of the Republic of Indonesia was established to counter Dutch attempts to re-assert colonial control.
Sjafruddin Prawiranegara →Members of the All-India Muslim League observed a "Day of Deliverance" to celebrate the resignations of members of the Indian National Congress over the decision to enter the Second World War at the request of the United Kingdom.
All-India Muslim League →The Lincoln Tunnel, connecting New York City to Weehawken, New Jersey, opened.
Lincoln Tunnel →Calculate business days and elapsed calendar time between this date and any other.
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Questions & Answers
Monday, December 22, 2025 falls on a Monday.
277 days ago (9 months, 3 days ago). It is day 356 of 2025 with 9 days remaining in the year.
In Roman numerals, Monday, December 22, 2025 is written as XXII.XII.MMXXV (Day.Month.Year format).
The moon phase for this date is Waxing Crescent (approx. 6% illuminated). The astrological sun sign is Sagittarius.