There are 129 sleeps (129 days) until March 1 (Monday, March 1, 2027).
There are 129 days until March 1 (Monday, March 1, 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 1. Sleeps are the same as days.
129 sleeps is 18 weeks and 3 sleeps.