There are 268 sleeps (268 days) until July 18 (Sunday, July 18, 2027).
There are 268 days until July 18 (Sunday, July 18, 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 18. Sleeps are the same as days.
268 sleeps is 38 weeks and 2 sleeps.