Today, March 20, the duration of day and night will be equal in many parts of the world, including Pakistan.

In scientific terms, it is called the Spring Equinox. On this day, day and night become almost equal, about 12, 12 hours.

On this day, the sun is exactly above the equator. The duration of day and night feels almost the same all over the world.

It should be noted that this happens twice a year. One in March and the other in September, which is called the Autumn Equinox.

However, at such times, the duration of day and night is said to be equal, but in reality, due to the spread of sunlight and the effect of the atmosphere, the day is a few minutes longer.