Early deadlines are coming up so make sure to avoid any stress by submitting before the deadline.
For your Common App applications, here is the rule for calculating the deadlines:
11:59pm, the student's local time, on deadline day
Pro tip: DO NOT WAIT UNTIL 11:59PM OF DEADLINE DAY.
Technical glitches can happen, servers can crash, the tech gods can get angry.
Try to submit the day before so that you have time to resolve any problems that crop up.
Before you submit, save a preview of your application so that you have a copy of it, and also screenshot the page that shows you have submitted. Just in case you need to prove that you did.
And once you've submitted, CELEBRATE. It's a big deal!