There are 160 sleeps (160 days) until April 1 (Thursday, April 1, 2027).
There are 160 days until April 1 (Thursday, April 1, 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 April 1. Sleeps are the same as days.
160 sleeps is 22 weeks and 6 sleeps.