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This figure-8 path that the sun makes in the sky is called the analemma. On some days you might notice that the sun is not in the sky where, according to the time on your watch, you would expect it to be.

This experiment can only be done at solar noon twice a year; at the spring and autumnal equinox. These are the two times the sun is directly over the equator. You can do this experiment one or two days before or after the equinox to work around cloudy day

My class Earthday 2008, plus the Exploring Space and Time Project a year long project dedicated to the earth in relationship to the sun, film included that is short and explains