At the moment when you select an interval for a month, it runs every 31 days from the start date. Wouldn’t it make more sense if for example you set the start date of a scheduled event on the 10th of May, the event is repeated on the 10th of every month? And the same when you select a yearly interval, it runs on the same day the next year? As now we more often need to create daily interval events that check if it is for example the 10th of the month and if yes: run the rest. Otherwise we could just schedule an event with a monthly interval.