- Fog: I'll have to set my watch ahead one hour.
- Rigodon: But why?
- Fog: The Earth is divided by imaginary lines into twenty-four time zones. Now then.
- [He adjusts his watch]
- Fog: These imaginary lines are called meridians, and every time we cross one going east, it's an hour later than before.
- Rigodon: I find all of zese changes so confusing, Monsieur Fog, so if you don't mind I'll set my watch according to ze time in London.
- [He checks his watch]
- Rigodon: But how can zis be? My watch also says twelve o'clock, Monsieur Fog! Tico!
- [Tico laughs]
- Rigodon: If zis is one of your jokes, it's not very funny. You changed the time on my watch, didn't you?
- Tico: Don't blame me if your watch don't know what time it is.
- Fog: [laughs] Tico is innocent, Rigodon. London time is also twelve o'clock.
- Rigodon: But London's so far away.
- Fog: In fact, Rigodon, London is precisely half way round the world from where we are now, which means that when it's twelve midnight there, it's twelve noon in our present location.
- Rigodon: So it's midnight in London?
- Fog: It's one hour later every time we cross a meridian into a new time zone, and this is the twelfth meridian we've cross since leaving London.