EventDay App is..
Simply to record the event a few days, whats left,
or passed and the application helps to see how.
-- Main Function
1. D-Day : As of a specified event, you can see how much.
2. few Days : As of a specified event, you can see how much has passed.
3. Wen day : From the start and started a few days (100 days, 200 days, etc.), and,
To calculate button and save, you can see what days I have left.