There are 249 sleeps (249 days) until June 29 (Tuesday, June 29, 2027).
There are 249 days until June 29 (Tuesday, June 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 June 29. Sleeps are the same as days.
249 sleeps is 35 weeks and 4 sleeps.