After you file

Note also:...it is "expected" not promised...within 21 days after the IRS "Accepts" your tax file.  
The IRS hasn't taken any yet. And unless yours gets taken during a test pull, that time  starts once they accept it...and the start date for that is around the 29th of January...and they could start earlier...they could push it back later.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*