off my head and -to avoid converting times- I'm going to use my local time which is UTC+3:
com/net : 21:00-22:00
org : ~18.30 (could be a bit earlier or later)
info : 13:00-13:30
biz: used to be at around 21:00 but it has changed to sometime at midnight to early morning
watch for daylight time. those times will change at the end of the month to -1 hour (except com/nets)