Days countdown (notification)

1. Automate Community
2. Productivity

Count down the days before a date decided by the user.
Always show a notification with the number of days left.
When the countdown ends, sets an alarm at a time selected by the user at flow startup and opens a dialogue window, which can have a custom message, when the screen is turned on.

Note :
Still have to try out if the leap years work fine.
Please feel free to tell me if you think of a way to improve this :)