There are 79 sleeps (79 days) until January 10 (Sunday, January 10, 2027).
There are 79 days until January 10 (Sunday, January 10, 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 January 10. Sleeps are the same as days.
79 sleeps is 11 weeks and 2 sleeps.