I'm growing mad with these time calculations...
Accordingly to the time of your post (9.27pm I see) + 2.5 hours should be 00.00 for me, but as I should be +2 now for daylight savings (just checked greenwitch site) it should be 01.00..but you say 2.5 hours..
Anyway I'm completely free for this night so I'll be on from 00.00 and can wait an hour if needed.