There are 361 sleeps (361 days) until October 20 (Wednesday, October 20, 2027).
There are 361 days until October 20 (Wednesday, October 20, 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 October 20. Sleeps are the same as days.
361 sleeps is 51 weeks and 4 sleeps.