There are 28 sleeps (28 days) until November 20 (Friday, November 20, 2026).
There are 28 days until November 20 (Friday, November 20, 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 20. Sleeps are the same as days.
28 sleeps is 4 weeks.