[Elsie]

So how did Regiomontanus know that there would be a lunar eclipse on that day ant time, over a region of the world he had no idea existed and with no concept of time zones?

Uh, the moon eclipse lasts around an hour and a half and can be seen from ANYWHERE on the side of the earth that faces the moon, at the same time.

A solar eclipse is a very small spot on the surface of the earth; seen only locally.

I saw my first (probably only) total solar eclipse just a few years ago in central Kentucky.

When I got back to central Indiana, folks asked what was the big deal? We didn't see much at all.

[Elsie]

https://en.wikipedia.org/wiki/Solar_eclipse_of_August_21,_2017

 

 

 

 

 

click it!

TWICE...

 

https://upload.wikimedia.org/wikipedia/commons/1/1c/Map_of_the_solar_eclipse_2017_USA_OSM_Zoom1.png