There are 343 sleeps (343 days) until October 2 (Saturday, October 2, 2027).
There are 343 days until October 2 (Saturday, October 2, 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 2. Sleeps are the same as days.
343 sleeps is 49 weeks.