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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 584 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: 584
- Weeks remaining: 83
First Day of Winter 2027 falls on a Tuesday — Tuesday, December 21, 2027. That is 584 days away, or about 83 weeks and 19 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. First Day of Winter falls on a Tuesday this year, a midweek date — worth noting if you want to plan time off around it.
Counting down turns a vague "soon" into a clear number of days you can plan around — booking travel, sending cards, or simply building anticipation. Many people begin preparing for a date like this two to three months ahead, and a visible countdown helps pace that preparation rather than leaving everything to the final week. If you are counting down to First Day of Winter, you can add a free Outside countdown widget to your iPhone home screen; it updates every day and can be shared with friends and family.
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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 584 days (about 83 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.
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 — 584 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 584 days until First Day of Winter 2027 on Tuesday, Tuesday, December 21, 2027 — approximately 83 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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