How Many Sleeps Until First Day of Spring 2027?
First Day of Spring 2027 falls on Saturday, March 20, 2027.
First Day of Spring 2027 falls on Saturday, March 20, 2027, which is 148 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 | Wed 10 Mar |
| 9 | Thu 11 Mar |
| 8 | Fri 12 Mar |
| 7 | Sat 13 Mar |
| 6 | Sun 14 Mar |
| 5 | Mon 15 Mar |
| 4 | Tue 16 Mar |
| 3 | Wed 17 Mar |
| 2 | Thu 18 Mar |
| 1 | Fri 19 Mar |
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 Spring 2027
The march equinox of 2027 falls on March 20, 2027 at 20:23 UTC — the astronomical start of spring in the Northern Hemisphere (autumn below the equator).
Astronomically, this is the moment the Sun crosses the celestial equator heading north — autumn in the Southern Hemisphere. It is also the day the tide of daylight turns: after the March 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) | March 20, 2027 · 20:23 |
|---|---|
| Event | March Equinox |
| Hemisphere note | Seasons flip in the Southern Hemisphere |