There are 275 sleeps (275 days) until July 25 (Sunday, July 25, 2027).
There are 275 days until July 25 (Sunday, July 25, 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 25. Sleeps are the same as days.
275 sleeps is 39 weeks and 2 sleeps.