There are 267 sleeps (267 days) until July 17 (Saturday, July 17, 2027).
There are 267 days until July 17 (Saturday, July 17, 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 17. Sleeps are the same as days.
267 sleeps is 38 weeks and 1 sleep.