There are 322 sleeps (322 days) until September 10 (Friday, September 10, 2027).
There are 322 days until September 10 (Friday, September 10, 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 10. Sleeps are the same as days.
322 sleeps is 46 weeks.