Ah, that makes sense. I did create the schedule before 1 March, but it was a different date at that time. I changed it, but it was after 1 March.
I was thinking it was more conditional. "It's after 1 March, set to true." But I see now that it's past 1 March and won't trigger again until next year.
Thanks. I toggled the state and will see if things fire off as they should.