There are 494 sleeps (494 days) until February 29 (Tuesday, February 29, 2028).
There are 494 days until February 29 (Tuesday, February 29, 2028) — 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 29. Sleeps are the same as days.
494 sleeps is 70 weeks and 4 sleeps.