No way to change the date? – Perspective - Event Countdowns and Habit Tracking Review

So if you are creating a new event it does not let you choose the date only the month and year. I keep messing with it trying to figure out how to change the actual date to something that happened a few days ago but all I can choose is today's date.
Review by Grizwool on Perspective - Event Countdowns and Habit Tracking.