27
Rosh Hashanah, the Jewish New Year, begins at sundown on the date shown. One sleep per night: tonight is the first, and the morning after sleep number 27 is the big day. This page recalculates on every visit — perfect for the nightly "how many sleeps?" check.
When is Rosh Hashanah 2026? Rosh Hashanah 2026 is on Friday, September 11, 2026. Rosh Hashanah by year:
| 2026 | Friday, September 11 |
| 2027 | Friday, October 1 |
| 2028 | Wednesday, September 20 |
| 2029 | Sunday, September 9 |
| 2030 | Friday, September 27 |
How many sleeps until Rosh Hashanah 2026?
There are 27 sleeps until Rosh Hashanah 2026 (Friday, September 11, 2026).
How are sleeps counted?
One sleep per night between now and the big day — tonight is the first sleep, and the morning after the last sleep is Rosh Hashanah 2026. Sleeps are the same as days.
How many weeks until Rosh Hashanah 2026?
27 sleeps is 3 weeks and 6 sleeps.