There are 146 sleeps (146 days) until March 18 (Thursday, March 18, 2027).
There are 146 days until March 18 (Thursday, March 18, 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 March 18. Sleeps are the same as days.
146 sleeps is 20 weeks and 6 sleeps.