There are 278 sleeps (278 days) until July 28 (Wednesday, July 28, 2027).
There are 278 days until July 28 (Wednesday, July 28, 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 July 28. Sleeps are the same as days.
278 sleeps is 39 weeks and 5 sleeps.