Sleeps Until First Day of Winter (Northern Hemisphere) 2026
First Day of Winter (Northern Hemisphere) 2026 falls on Monday, December 21, 2026.
First Day of Winter (Northern Hemisphere) 2026 falls on Monday, December 21, 2026, which is 59 sleeps away. A sleep count is the number of nights still to come rather than the number of days, which is why it is the version adults reach for when the person asking is a child — and why it stays intuitive long after the day count stops meaning much.
| Sleeps left | Morning of |
|---|---|
| 10 | Fri 11 Dec |
| 9 | Sat 12 Dec |
| 8 | Sun 13 Dec |
| 7 | Mon 14 Dec |
| 6 | Tue 15 Dec |
| 5 | Wed 16 Dec |
| 4 | Thu 17 Dec |
| 3 | Fri 18 Dec |
| 2 | Sat 19 Dec |
| 1 | Sun 20 Dec |
How a sleep count works
The convention: one sleep means one night still to go. On the morning before, the answer is one. On the morning of the day itself, it is zero — you have run out of nights to sleep through. Because it tracks nights rather than 24-hour periods, the figure can read one higher than the day count for an event that lands in the morning.
About First Day of Winter (Northern Hemisphere) 2026
The december solstice of 2026 falls on December 21, 2026 at 20:48 UTC — the astronomical start of winter in the Northern Hemisphere (summer below the equator).
Astronomically, this is the Sun at its southernmost point — winter begins in the north, summer in the south. It is also the day the tide of daylight turns: after the December solstice the change is barely minutes per week, then accelerates — the reason the weeks after a solstice feel darker (or lighter) faster than the solstice day itself.
Quick facts
| Exact moment (UTC) | December 21, 2026 · 20:48 |
|---|---|
| Event | December Solstice |
| Hemisphere note | Seasons flip in the Southern Hemisphere |