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What Day Is First Day of Winter 2027?
First Day of Winter 2027 falls on a Tuesday — Tuesday, December 21, 2027. That's 504 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 First Day of Winter in view.
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First Day of Winter
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Date details for First Day of Winter 2027
- Day of week: Tuesday
- Date: Tuesday, December 21, 2027
- Days remaining: 504
- Weeks remaining: 72
First Day of Winter 2027 falls on a Tuesday — Tuesday, December 21, 2027. That is 504 days away, or about 72 weeks and 16 months. First Day of 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 First Day of 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 | Tuesday, December 21, 2027 |
|---|---|
| Days remaining | 504 |
| Weeks remaining | 72 |
| Months remaining | ~16 |
Last updated August 4, 2026
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Open page →About First Day of Winter
The first day of Winter 2027 is Tuesday, December 21st.
History & Significance
This date marks the Winter Solstice in the Northern Hemisphere, the shortest day of the year.
The Science Behind First Day of 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 First Day of Winter 2027 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.
First Day of Winter 2027: Frequently Asked Questions
What day is First Day of Winter 2027?
First Day of Winter 2027 falls on Tuesday, Tuesday, December 21, 2027. That is 504 days (about 72 weeks) from today.
What day of the week is First Day of Winter 2027?
First Day of Winter 2027 is on a Tuesday. Mark your calendar for Tuesday, December 21, 2027; the weekday alone does not determine whether it is a public holiday or a day off.
Is First Day of Winter 2027 on a weekday or weekend?
First Day of Winter 2027 falls on a Tuesday, which is a weekday. Knowing this early helps you plan time off, travel, or gatherings around the date.
When is First Day of Winter 2027?
First Day of Winter 2027 is on Tuesday, Tuesday, December 21, 2027 — 504 days away. Add a free countdown widget on your iPhone with the Outside app to keep the date in view.
How many days until First Day of Winter 2027?
There are 504 days until First Day of Winter 2027 on Tuesday, Tuesday, December 21, 2027 — approximately 72 weeks from now.
What causes First Day of Winter to begin?
First Day of 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 First Day 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 First Day of Winter can shift by a day or two from year to year. 2027 has its own precise changeover date and time.
What is the difference between meteorological and astronomical First Day of 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 First Day of Winter 2027.
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