In the recent episode, Scary Monsters and Super Creeps, they once again show Agent Gough's FlashForward in London where he is working with an MI6 agent, Fiona Banks, on a case. In that FlashForward, the sun is up in London, UK. Up until now, many have suggested that the FFs have been showing the same time of day on April 29th/30th. However, if it is 10 PM in Los Angeles for Mark's FF, that would mean it would have to be 5 AM in London on April 30th, which is 8 hours ahead of LA. There are two problems with this:
1. Why would Gough and Fiona Banks be up working on a case at 5 AM
2. The sun doesn't actually rise in London, UK on April 30th until 535 AM Local Time
Therefore, if the FFs ARE supposed to be showing the same moment on April 29th/30th, it would still be dark in Agent Gough's and Fiona Banks' FF. Also, I'm not sure if in the first or second episode if Gough mentioned whether or not his FF was supposed to be on April 29th or April 30th. That might actually make a difference, since if he did say it was April 30th, then it may just be an error on the part of the directors/producers that there was so much daylight in Gough's FF.