There are 72 sleeps (72 days) until January 3 (Sunday, January 3, 2027).
There are 72 days until January 3 (Sunday, January 3, 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 3. Sleeps are the same as days.
72 sleeps is 10 weeks and 2 sleeps.