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Monday, December 21, 2026

Astronomical winter in the Northern Hemisphere begins on December 21, 2026 — the winter solstice and the shortest day of the year.

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Why this date?

  • The winter solstice marks the shortest day and longest night of the year in the Northern Hemisphere.
  • After the solstice, daylight gradually increases until the summer solstice.
  • Meteorological winter runs December 1 to February 28/29.
  • In the Southern Hemisphere, December 21 is the summer solstice.

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