Sort:  

Now you got me. I would say servers local time but right now im not 100% will check

Posted using Partiko Android

Probably utc/gmt then. I was curious, because 15:00 if it means say, 3pm est, a peak posting time on your charts, would make sense, since a huge portion of the world is under the sun and awake at that time. Just an anecdotal, unscientific thought.