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What Day Is Winter 2026?
Winter 2026 falls on a Monday — Monday, December 21, 2026. That's 143 days away.
Knowing the day of the week makes it easy to plan time off, travel, or weekend activities. Add a free countdown widget on your iPhone to keep Winter in view.
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Winter
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Date details for Winter 2026
- Day of week: Monday
- Date: Monday, December 21, 2026
- Days remaining: 143
- Weeks remaining: 20
Winter 2026 falls on a Monday — Monday, December 21, 2026. That is 143 days away, or about 20 weeks and 4 months. Winter is an astronomical season that begins at a solstice or equinox, the precise moment Earth's tilt reaches a turning point.
Use the date above to set a reminder or calendar entry. If Winter has an official organizer or observing authority, check its latest information before making bookings because times, venues, and local observance details can change. You can also add a free Outside countdown widget to your iPhone home screen; it updates every day and can be shared with other people.
| Date | Monday, December 21, 2026 |
|---|---|
| Days remaining | 143 |
| Weeks remaining | 20 |
| Months remaining | ~4 |
Last updated July 31, 2026
Looking for Winter 2027?
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Open page →About Winter
Find out when Winter 2026 is. Count down the days and set a reminder.
The Science Behind Winter
Seasons are driven by the tilt of Earth's axis — roughly 23.5 degrees — not by how close the planet is to the Sun. As Earth orbits, each hemisphere leans toward or away from the Sun, changing the angle of sunlight and the length of the day. The astronomical start of a season is pinned to a solstice or an equinox, the precise moment that geometry reaches a turning point.
That is why the start of Winter 2026 lands on a specific date and even a specific time, rather than the first of a month. Equinoxes bring near-equal day and night worldwide; solstices mark the longest or shortest day of the year. Knowing the exact changeover is useful for gardeners, photographers, and anyone tracking daylight hours.
Winter 2026: Frequently Asked Questions
What day is Winter 2026?
Winter 2026 falls on Monday, Monday, December 21, 2026. That is 143 days (about 20 weeks) from today.
What day of the week is Winter 2026?
Winter 2026 is on a Monday. Mark your calendar for Monday, December 21, 2026; the weekday alone does not determine whether it is a public holiday or a day off.
Is Winter 2026 on a weekday or weekend?
Winter 2026 falls on a Monday, which is a weekday. Knowing this early helps you plan time off, travel, or gatherings around the date.
When is Winter 2026?
Winter 2026 is on Monday, Monday, December 21, 2026 — 143 days away. Add a free countdown widget on your iPhone with the Outside app to keep the date in view.
How many days until Winter 2026?
There are 143 days until Winter 2026 on Monday, Monday, December 21, 2026 — approximately 20 weeks from now.
What causes Winter to begin?
Winter begins because of the 23.5-degree tilt of Earth's axis. As the planet orbits the Sun, each hemisphere leans toward or away from it, changing sunlight and day length. The season's astronomical start is pinned to a solstice or equinox.
Is the start of Winter the same date every year?
Not exactly. Because the solstice and equinox follow Earth's orbit rather than the calendar, the start of Winter can shift by a day or two from year to year. 2026 has its own precise changeover date and time.
What is the difference between meteorological and astronomical Winter?
Meteorological seasons are fixed three-month blocks used by forecasters, while astronomical seasons are defined by solstices and equinoxes. The date counted here is the astronomical start of Winter 2026.
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