Voting began on October 14, 12PM EDT. My local timezone is CDT so at 1200 ET it is 1100 CT. The app invited me to vote with a push notification. However, in the app there was still time on the clock. The countdown completed and allowed me to vote at 1400 CT (1500 ET). Attaching a screenshot showing the countdown and the local time.

If this is truly a timezone math bug, it could affect everyone on the west coast of the US.