There are 317 sleeps (317 days) until September 5 (Sunday, September 5, 2027).
There are 317 days until September 5 (Sunday, September 5, 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 September 5. Sleeps are the same as days.
317 sleeps is 45 weeks and 2 sleeps.