How many hours apart is the earth's prime meridian ...

Thomas Harris — Mon, 09 Nov 2009 00:26:25 GMT

How many hours apart is the earth's prime meridian and mars prime meridian at noon Mars time, 4 december 2020

RE: How many hours apart is the earth's prime meridian ...

Alcohen2006 — Fri, 25 Dec 2009 20:44:03 GMT

Obviously you've spent a lot of time giving data and figures to help answer the question; but there's still a gigantic pothole that prevents any answer. The problem is: What exactly does "Mars time" mean ? Mars rotates every 24.6 hours ... not that different from earth's rotation; so a day on Mars is roughly the same duration as a day on Earth. On Earth, we define "noon" as the time when the sun is due south, and in order to make it possible for everyone to use the same definition, we slice up the surface of the earth in 24 time zones, with the clocks in each time zone set differently. So there's no such thing as "Earth time". If "Noon" is defined the same way on Mars, then Mars also needs a bunch of time zones, and the concept of "Mars time" is out the window.

Before you can ever move toward an answer to this question, you have to invent a whole system of time-telling for the entire planet, just as was done for Earth.

And I have to say that if you ever do close in on the answer, I'm betting that your first impression will be one of how useless the question was in the first place.