There are 216 sleeps (216 days) until May 27 (Thursday, May 27, 2027).
There are 216 days until May 27 (Thursday, May 27, 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 May 27. Sleeps are the same as days.
216 sleeps is 30 weeks and 6 sleeps.