There are 312 sleeps (312 days) until August 31 (Tuesday, August 31, 2027).
There are 312 days until August 31 (Tuesday, August 31, 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 August 31. Sleeps are the same as days.
312 sleeps is 44 weeks and 4 sleeps.