In which two months of the year does an equinox occur?

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Explore the intricacies of the Sun-Earth-Moon System with our C20 Test. Utilize flashcards and multiple choice questions to gain a comprehensive understanding of celestial mechanics. Prepare thoroughly for your exam!

Multiple Choice

In which two months of the year does an equinox occur?

Explanation:
An equinox happens when the Sun is directly above the Earth’s equator, so day and night are about the same length. This occurs twice a year, in March and September. In March we have the vernal (spring) equinox, and in September the autumnal (fall) equinox. The other options pair months with solstice times or include months without this equal-day-night event, so March and September are the correct pair.

An equinox happens when the Sun is directly above the Earth’s equator, so day and night are about the same length. This occurs twice a year, in March and September. In March we have the vernal (spring) equinox, and in September the autumnal (fall) equinox. The other options pair months with solstice times or include months without this equal-day-night event, so March and September are the correct pair.

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