Your observation of the current situation is a pain the ass
There are some reasons as to why the events are hosted at the times they are. Allow me to try and explain why that is. First of all, you were right, it is because most of the GM's are available on and about 1am GMT. Then there's another thing, where being a GM-event hosting or participating GM requires a good knowledge of the English language. The majority of the english native speakers live in the US. Currentely the scale is better balanced and we really are trying to host the events at points where the european part of the comunnity is treated the same as the US part. Truth is, that will be tough for some time to come. It's easier for lill ol me to adjust and stay awake until 3 am then it is for 80% of a team to do so.
Also, not unimportant, is that most activity occurs at that time. As a GM-event orgainser, the highest activity is appealing ofcourse. And once again, an increase at native english speakers also appeals to the GM's since communication is then easier for most.
However I do not think of any one of these reasons to be valid. There should be more events at a wider variety of times, so every time zone has a chance to participate. But... to show you how this goes, I shall give you the times on whch the latest 10 events were hosted;
22:00 GMT
23:00 GMT
23:30 GMT
10:00 GMT
02:00 GMT
00:00 GMT
15:00 GMT
00:00 GMT
16:00 GMT
As you can clearly see, the times are mainly suitable for US players for now. But whenever the possabillity arises to do one for the European players, we do so. Now it's a matter of increasing the chances we get to do so.
Hope I made sense,
Yill.