There are 328 sleeps (328 days) until September 16 (Thursday, September 16, 2027).
There are 328 days until September 16 (Thursday, September 16, 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 16. Sleeps are the same as days.
328 sleeps is 46 weeks and 6 sleeps.