There are 245 sleeps (245 days) until June 25 (Friday, June 25, 2027).
There are 245 days until June 25 (Friday, June 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 June 25. Sleeps are the same as days.
245 sleeps is 35 weeks.