BUG report: schedules -> New schedule -> SCHEDULE (advanced=off) {Run every 1 hour … on the 15th minute of the hour.} + CREATE => Schedule with cron 15 */1 * * * Flowrun with this schedule not start. With edited to 15 * * * * works fine.

Thanks for raising this. I submitted a Github issue to investigate: https://github.com/PrefectHQ/ui/issues/1221 In the future, you can directly submit any potential bug reports in Github