We all have access to insights in all social media platforms but those numbers are based on the days and times that users are active on the platform.

New report by Sprout Social (Link at the bottom) is developed based on the company’s 20,000+ customers who use the app to schedule their posts with their audience.
Sprout social generated this report based on the actual times that the posted content gets highest engagement rates. So, this data looks more accurate than the insights from inside each social media platform.

But we should consider that this report, and all other similar reports, are generic and based on broad data sets.
The best time for you to post is completely related to your unique audience and their behaviors. But, looking at these data which is based on 20,000+ accounts can help you to figure out what other accounts are doing and which days or times are better for those accounts. So, it can help you to figure out your path faster and reach to better results on social media.

Another key point about this report is that all times are based on Central Time Zone (CST). However, I think the report could also be similar for other time zones.
If you look at the report inside, you can see that the report is categorized based on social media platforms and industries. So, if you find your industry in the report, then you may get better insights about the data.