There are 279 sleeps (279 days) until July 29 (Thursday, July 29, 2027).
There are 279 days until July 29 (Thursday, July 29, 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 29. Sleeps are the same as days.
279 sleeps is 39 weeks and 6 sleeps.