Perhaps somebody may know the time (of a specific timezone) where most people are online and offline.
Well there's actually a Data Query for that1. The results of which are seen below. The y-axis is the average time (in minutes) between the question posting and the answer posted, the x-axis is the day & hour binning of the week in UTC time2
The top 8 days, hours & time difference for the shortest times between question posted and answer given (and for the last year) are:
Day | Hour | Time difference ------------------------------------ Sun | 1300 | 78 min Sat | 1700 | 83 min Tue | 1600 | 86 min Thu | 1200 | 88 min Mon | 1400 | 91 min Mon | 1300 | 91 min Sun | 1100 | 91 min Fri | 2000 | 92 min
The mean time across the week is 170 minutes (or 2 hours, 50 minutes)
However, as I stated in a comment, quality answers are what you should be wanting, not fastest answers. In this case, you may be waiting some time (hours into days into weeks) for a good answer to your question.
I've tried to chart when questions usually get more views and answers or when answers of my own get more attention. It seems to have little to do with time. There are usually a fair number of users online at all times. There is a rise and fall in activity on the site and the rate of asked/answered/modified posts through the day, however I never could find a significant relationship between the time and the probability of a question getting a good answer or an answer getting a decent amount of attention.
During peak activity, there are more users, but posts become buried in the active page quicker. During the least active times, there are less users but posts stay on the active page longer. Not only this, but there are good answering users available all through the day. However, the best users to answer your question (based on the topic of the question) may or may not be online at any given time.
The point is that since it is a diurnal cycle of activity, after about a day (based on my observations and controlled for quality of the thread) you have about the same amount of activity for a question no matter when it was posted. Good questions will be upvoted, viewed, and answered. Bad questions will be downvoted, closed, and/or ignored. In all cases, you usually get 1 to 2 days of activity for a given question. Unless it's a HNQ, which can get up to a week extra on our site. After that, only editing the posts will get it a few more views (this is all for average posts. Posts at either ends of the curve will obviously be susceptible to irregular activity).