Answer:
It started on October 1st, 2018. However you have time till Midnight June 30, 2020, CENTRAL TIME. This is for session 2019-2020. Register as early as possible, as in that case you will have much better chance of getting more grant. However, it is almost assured that you are going to get it. The only issue is, if you apply early you can get more grant.
Step-by-step explanation:
FAFSA stands for free application for federal student aid. Dates are given above,