Why Time Zones Matter on Christmas Eve

Here’s one of the strangest things about Christmas Eve:

It can be December 25 in one place while it is still December 24 somewhere else.

That happens because Earth is divided into time zones.

As Earth rotates, different parts of the planet experience daytime and nighttime at different times. That’s why someone in one country can be eating breakfast while someone far away is getting ready for bed.

For Santa, time zones are extremely important.

Mission Control keeps clocks showing local times in different regions around the world. The Navigation Team uses them to understand where nighttime is arriving and where Christmas morning is getting closer.

Christmas also begins earlier in some parts of the world than others. Santa’s route follows the changing night across the planet.

The International Date Line adds another interesting twist. It helps determine where one calendar day changes into another.

That means the Christmas Eve flight isn’t simply a race around a map. It is a carefully timed journey through a world full of different clocks.

Inside Mission Control, dozens of local times are displayed at once.

Fortunately, Santa doesn’t have to reset his watch every few minutes.

The Navigation Team handles the clocks.

Santa has enough to do.