I don't usually get online until gone 10pm local (currently GMT+1, returns to GMT last Sunday in October) and the finish is anywhere between 11 and 1ish. The chances are if you joined at 11pm and we were wrapping up we'd stick around for a bit longer. Or I may be being presumptuous about Arc and his server, but I think not.
My online start times should be earlier now, as the wife's back at school (teacher, not a pupil) and is knackered and goes to bed earlier.
...which means...
...more time for crashing!