One of the "good news, bad news" of sleeping few hours at odd times is that jet lag has very little impact on you.  It is 11:36 PM here in "jolly olde England" and 3:26 PM in Seattle,  Folks at the office are about to head to the Starbucks (they are on every block here in London).  Me, I made a few last minute changes to my PowerPoint for the morning.