Rambling travelogs from a world traveler

Tuesday, January 7, 2014

Time Zone Vs Solar Time

 "An entire sensibility - it is called conservatism - is bound up with the idea that time is a test, that some things pass it, but most flunk." ~ George Will

Gentle Readers and Loved Ones,

I just saw a way cool map and I had to share it with you all.  As you know the world is divided into time zones because the world is round and it spins and the sun ain't in the same place in the sky all over the world.  There are 24 time zones and that means that each time zone is roughly 15° of longitude wide.

Therefore if you happen to live in the furthest east portion of your time zone, your 'local day' - based on the position of the sun in the sky - will start earlier and end earlier than someone who lives in the furthest west portion of your time zone. This despite both of your clocks showing the same time.

This map shows that relationship.  Green shows the eastern most times where your local day is ahead of the official time zone time and red shows where it is behind. 

http://i0.wp.com/poisson.phc.unipi.it/~maggiolo/wp-content/uploads/2014/01/SolarTimeVsStandardTime.png

Click this link for a full sized interactive look at this map.

If you want a detailed explanation of this look here:  Time Zone and here: Solar Time.

On that happy note of geekinosity,  I remain,

Dad / Geoff

1 comment:

Loni Stewart said...

I read your account on the horse charters to Japan. When I was with Cargojet I remember seeing the CTA notices about them. I would like to know if FedEx is still doing these charters as all we see at YYC is Atlas. Thanks!