Check out this HootSuite article which shares some resources that can serve as a guide to help you find the optimal posting times for your social media updates.
These resources provide helpful insight into social timing, but It’s not a hard science; ultimately you need to figure out the best times for your own particular audience.
As with so much in social marketing, keep on experimenting and keep on testing until you find your sweet spot.
Related Reading: Why There’s No Perfect Time to Post on Facebook
Health Care Social Media 
One thought on “When Is The Best Time to Post on Facebook, Twitter, and Instagram?”