Hmm, yes I see... my version is about spot on for the US (Indiana) while the XKCD version is about an hour and a half behind. I'm not sure what to do about it other than re-draw the map but thanks for pointing that out!
Any suggestions?
For now I just rotated the map so that the time will be based on the Greenwich Meridian instead of my local meridian.
six hours slow? I'll have to fix that up, I'm basically just matching MIDNIGHT to America/Los_Angeles timezone and rotating based on the offset. I'll have to rethink that it looks like, thanks for pointing that out.
Any suggestions? For now I just rotated the map so that the time will be based on the Greenwich Meridian instead of my local meridian.