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##### Flat Earth Community / Re: Detailed flight times and distances

« Last post by**Tom Bishop**on

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**Today**at 05:15:48 PMWe've discussed this.

How are kilometers gauged on the left hand side in that chart? Spherical coordinate distances from Longitude and Latitude systems? How do you measure that sort of large distance without using the standard Longitude and Latitude system?

That is the matter under question, yet that graph "knows" how many kilometers the planes flew.

Actually I think Tom's problem is the y-axis. This distance depends on spherical assumptions, and I suspect he thinks the logic is somehow circular.That is the matter under question, yet that graph "knows" how many kilometers the planes flew.No, the airline does.

And they know how long their flights take.

Planes fly at a fairly standard cruising speed and that graph demonstrates that, time and distance largely correlate.

It's almost like they know how far they're flying and how fast and they have a map which works.