City Faction Leader Respawn Time

Hey everyone I was wondering if anyone knows the regular respawn time for Varian Wrynn because I made a DK on Lordaeron and somebody said that he is dead so I cant turn in my quest to be able to progress on my toon. This is very frustrating. If anyone has any info on when he usually respawns it would be appreciated. Also I can only assume that is has been less than an hour that he has been dead now and I just need to know what to expect. If its too long I will just log off for the night. Thanks.