There are 344 sleeps (344 days) until October 3 (Sunday, October 3, 2027).
There are 344 days until October 3 (Sunday, October 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 October 3. Sleeps are the same as days.
344 sleeps is 49 weeks and 1 sleep.