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Name: Sarah P.
Status: student
Age: 14
Location: N/A
Country: N/A
Date: Tuesday, May 21, 2002


Question:
At the time of the spring and fall equinoxes, there are 12 hours of daylight and 12 hours of darkness all over the world. The dates of these are?


Replies:
This NEVER happens. For example, the poles have one sunrise and one sunset each year. There is never a 12 hour day, 12 hour night at the poles.

Due to atmospheric refraction, there is never a single date in the rest of the world for such an occurrence.

Many "standardized" tests make this error, as do texts.

In Chicago, IL 12 hour day/night occurs about 17.March. In Southern Brazil, this happens about the 23.March.

Nate Unterman



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