Question

when would the day and night have equal duration in this month September why

Answer 1

Hello,

here is your answer

September 23 will have equal day and night. The sun will on thursday cross the plane of the earth's equator making day and night of approximately equal duration.

Hope it helps you.

Answer 2

September 23 is the day when day and night would have equal duration in the month September.

It is also known as equinox .

On this day the sun crosses the equator line that divides the earth into two hemispheres.

Because of the reason that sun is just above the equator line makes the duration of day and night equal.