I searched forums and couldn't find a post detailing exactly what I did find out. This post comes closest : http://www.mmowned.com/forums/world-...n-per-day.html.
It applies to Truegold, so I'm not sure it works the same with Inscription Researches.
I play on a GMT-6 server, and after queuing Arena, noticed my new "minimap time" was actually indicating GMT-5. I opened my professions and wondered if I could do my Inscription Researches ahead of time. In fact, I could. So I did. During the match, the clock went past the GMT-6's midnight (passed 1AM on my Arena instance minimap time)
We played the match, and once I was back in Orgrimmar, both my researches were back up.
I didn't try testing the trick in BGs/dungeons as is done in the link above, since I'm still on cooldown (and someone mentioned a hotfix in the other thread) but I'll try tomorrow. This is a pretty neat thing to do if you need to catch up on Glyph researches, considering the amount of them there are to learn.
Hope that helps. Don't +rep me if you deem this redundant.