General charts of “the best time to post” describe millions of accounts, not yours. Your best time depends on where your audience lives, how they work and what they follow. The reliable way to find it is your own history: when did your posts get the most engagement, network by network?
Use it as a starting point, not a rule. Posting at a good hour helps a post’s first minutes, but what you post matters more than when. Recheck it every few months, and always look in your audience’s timezone, not your own.
