There are 163 sleeps (163 days) until April 4 (Sunday, April 4, 2027).
There are 163 days until April 4 (Sunday, April 4, 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 4. Sleeps are the same as days.
163 sleeps is 23 weeks and 2 sleeps.