There are 64 sleeps (64 days) until December 26 (Saturday, December 26, 2026).
There are 64 days until December 26 (Saturday, December 26, 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 26. Sleeps are the same as days.
64 sleeps is 9 weeks and 1 sleep.