There are 248 sleeps (248 days) until June 28 (Monday, June 28, 2027).
There are 248 days until June 28 (Monday, June 28, 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 28. Sleeps are the same as days.
248 sleeps is 35 weeks and 3 sleeps.