There are 57 sleeps (57 days) until December 19 (Saturday, December 19, 2026).
There are 57 days until December 19 (Saturday, December 19, 2026) — 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 December 19. Sleeps are the same as days.
57 sleeps is 8 weeks and 1 sleep.