There are 121 sleeps (121 days) until February 21 (Sunday, February 21, 2027).
There are 121 days until February 21 (Sunday, February 21, 2027) — one sleep per night.
One sleep per night between now and the big day — tonight is the first sleep, and the morning after the last sleep is February 21. Sleeps are the same as days.
121 sleeps is 17 weeks and 2 sleeps.