There are 21 sleeps (21 days) until November 13 (Friday, November 13, 2026).
There are 21 days until November 13 (Friday, November 13, 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 November 13. Sleeps are the same as days.
21 sleeps is 3 weeks.