Schedule Dashboard on Last Day of Month

Right now, it is not possible to schedule a dashboard to be sent out on the last day of the month. You can only choose a certain date or a certain day for the dashboard to be scheduled, which is not useful in this case because months have between 28-31 days. As of now, I have two options, one - create another dashboard showing the prior month's data and send it out on the first or second - schedule the DB to go out on the 28th, since all months have at least 28 days.