Is there a specific best time to post new chapters?
If not - should I always post at the same time, or spread the posting throughout different times? Like, 10:00 on Monday, 20:00 on Tuesday etc.
If I post more than one chapter a day, should I post one after another or wait for several hours between postings?
Best times to post new chapters?
Guiltythree For me, I usually post at the same time, so as to not confuse the readers. Same day same time. But if you think you can't update stably for a long period of time, you can post in different times. Your readers will be notified either way if they put your book in their library. I decided to update at the same time to force myself to write or else I won't have anything pushing me forward 
In some cases I think you should consider your target audience. For example, if it’s mostly teens who read your books then I wouldn’t post until 4 PM that way they are not tempted to look at it during class. If your followers are working parents then I would say 8 PM or if they are housewives/stay at home moms, I would say mid morning or mid afternoon. Always post at the same time every day so you do not cause stress for those readers who cannot wait for the next chapter to post.
Guiltythree I think it also helps to track your readers' time viewing/checking your chapters. It's in the dashboard.
TheMerryTroll So, I have another question then. Webnovel generally operates at GMT +8, right? But are the times on the dashboard also GMT +8 or are they synchronized with the author's local time? The dashboard shows that the peak reading time for me is 19:00, which is when I usually post my chapters (in local time), but 00:00 at GMT +8.
I'm confused :(
Guiltythree All times on Webnovel are GMT +8, and they are a day behind. Your readers obviously don't immediately open and read your chapters. It depends on where you have majority of your viewers from. Are they from the West, or are they from the East?