# What is the date when day and night are equal? with Answer - Everyday Science Mcqs | TestPrep

> Solved MCQ: What is the date when day and night are equal? Correct Answer: C. March 20 and September 23. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# What is the date when day and night are equal?

Direct Answer & Quick Reference

The correct option is **C. March 20 and September 23**.

An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth’s equator passes through the center of the Sun.[3] This occ...

A. March 21 and December 24

B. January 14 and September 23

C. March 20 and September 23 **(Correct Answer)**

D. January 14 and June 22

✨ Explain with AI

Verified Key: C. March 20 and September 23
Solved by 5,355+ students

**Detailed Explanation & Reference:**

An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth’s equator passes through the center of the Sun.[3] This occurs twice each year: around 20 March and 23 September. In other words, it is the moment at which the center of the visible Sun is directly above the Equator. The word is derived from the Latin aequinoctium, from aequus (equal) and nox (genitive noctis) (night). On the day of an equinox, daytime and nighttime are of approximately equal duration all over the planet.

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