There are 298 sleeps (298 days) until August 17 (Tuesday, August 17, 2027).
There are 298 days until August 17 (Tuesday, August 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 August 17. Sleeps are the same as days.
298 sleeps is 42 weeks and 4 sleeps.