How Long?
The October 31 – November 1 Clock Rollback & Late-Night Birth-Control Rules: The 3-Hour, 12-Hour and 24-Hour Missed-Pill Windows, Vomiting Timelines and Emergency Backups by Country
Ahead of the October 31 – November 1 Halloween + Daylight Saving Time clock rollback, here is why a 1-hour shift never breaks contraception—plus the 3-hour, 12-hour, and 24-hour missed-pill cutoffs, the 2–3 hour vomiting rule, and the 5-day Ella wait rule.