Do I have to file today the 17th or can I wait until tomorrow the 18th to file my income tax

Hi aintdizjip,

The return or extension must be postmarked or transmitted for e-filing by Tuesday, April 18, 2017, 11:59:59 P.M. (one second before midnight) in your local time.

https://ttlc.intuit.com/replies/3302298

Hope this helps!