There are 213 sleeps (213 days) until May 24 (Monday, May 24, 2027).
There are 213 days until May 24 (Monday, May 24, 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 24. Sleeps are the same as days.
213 sleeps is 30 weeks and 3 sleeps.