There is only three important timezone here to consider if you want to catch the majority of user online. Check the night time of EU, US and Asia.
If you want to see the most active users enter this bitcointalk forum, day and night you have to open each user profile that you want to see.
onlineThe time provided in this Forum is the time of the forum, not the time of every country in the world, it is up to you to live in any country.There are methods used by some managers in this forum to see active members in a matter of time in the world.
For example:You can use the method used by: @Coolcryptovator to see what time of day the user enters and is active in the forum.
I'm not sure what you mean about time, but maybe what I explained above can solve your problem.