Hari Om,
The muhurat for Diwali 2017 is as follows:
11:25am to 12:20pm (noon) business muhurat
5:46pm to 8:56pm
6:55pm to 8:52pm
11:41pm to 12:20am
1:46am to 4:04am
But, note that Amavasya is till 12:42am.
Wish all of you and your loved ones a very happy and prosperous Diwali!
Hari Om Sai Ram
Team Vedic Astrology Soulutions