I like the flat graphic style in this poster, which is really different style than the original poster. It shows the Paris city view by illustration, and use the moon and Eiffel tower as clock and hour hand to show the concept of midnight.
Aww reading XKCD just proves how much of a geek/nerd I am. "With reasonable assumptions about latitude and body shape, how much time might she gain them? Note: whatever the answer, sunrise always comes too soon. (Also, is it worth it if she throws up?