There are 115 sleeps (115 days) until February 15 (Monday, February 15, 2027).
There are 115 days until February 15 (Monday, February 15, 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 February 15. Sleeps are the same as days.
115 sleeps is 16 weeks and 3 sleeps.