December 21, 2026

December 21, 2026 is ...

• 355th day of the year. There are then 10 days left in 2026.
• 51st Monday of 2026.
• on the 52nd week of 2026 (using US standard week number calculation).
• 1st day of Winter. There are 89 days left till Spring.
• Birthstone for this day: Turquoise & Blue Topaz

December 21, 2026 United States Holidays & Popular Observances

There are no major holidays or observances in the United States for this date.

December 21, 2026 Popular Holidays & Observances Worldwide

• Inicio del Verano - Popular in: Bolivia, Brazil, Chile, Ecuador, Peru, Paraguay, Uruguay
• Inicio del Invierno - Colombia, Spain, Mexico, United States, Venezuela, Belgium