Today, day and night are equal everywhere in the world
September 23, 20242 Mins Read
Science and Application Desk: Today, September 23, day and night are equal everywhere in the world. Every year i.e. out of 365 days, only two days of the earth's day and night are equal. One day is 21 March and the other is 23 September.
Today, September 23, the sun will shine right along the equator between the northern and southern solstices. As such, day and night are equal everywhere in the world today.
day-and-night
From tomorrow, the sun will start moving towards the southern hemisphere due to the earth's orbit around the sun. The weather will also be cold to cold with northerly winds. The next nights will be gradually longer.
Then on March 20, the Sun ends its Southern Hemisphere stint and moves towards the Northern Hemisphere, crossing the equator at the end of the night. So the next day i.e. on March 21, the length of day and night of both hemispheres of the earth is equal.
Why does this happen?
As the Earth revolves around the Sun, the Earth's pole is always tilted at an angle of 66.5 degrees to the Sun. Again, the plane of the Equator or Equator is inclined at an angle of 23.5 degrees with the orbit. Because of this, every year on March 21 and September 23, day and night are equal all over the world. During this time both hemispheres of the world get light for 12 hours during the day and stay in darkness for 12 hours at night.
Abu Bakr Majumdar gave a harrowing description of Harun's torture at the DB office
On March 21 and September 23, the Sun's light strikes at an angle of 90 degrees at the equator and at an angle of 66.5 degrees at the equator and the equator. After March 21, the Earth's North Pole is most inclined towards the Sun on June 21. June 21 is the longest day at the North Pole. At the same time the South Pole moves farthest from the Sun. As a result, this day is the shortest day at the South Pole. Again on December 21 the day is shortest in Northern Hemisphere and night is longest in Southern Hemisphere.
