There are 265 sleeps (265 days) until July 15 (Thursday, July 15, 2027).
There are 265 days until July 15 (Thursday, July 15, 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 15. Sleeps are the same as days.
265 sleeps is 37 weeks and 6 sleeps.