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21 December 2025 calendar

is ...

  • 355th day of the year. There are then 10 days left in 2025.
  • 51st Sunday of 2025.
  • on the 51st week of 2025 (using ISO standard week number calculation).
  • Birthstone for this day: Turquoise & Blue Topaz

21 December Zodiac Sign

Zodiac
Sagittarius

21 December 2025 Australia Holidays & Popular Observances

21 December 2025 Popular Holidays & Observances Worldwide

  • Winter Solstice -
  • Fourth Sunday of Advent -
  • Hanukkah (Continues) -
  • Summer starts (Inicio del Verano) -
  • Kids' Day (Детињци) - Serbia

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