Must be a junior high school answer
March 21 is the approximate date of the vernal equinox (first day of spring). Depending on the rotation of the Earth the equinox may be a day earlier or a day later.
The first official day of Spring in the entire northern hemisphere is March 22nd. Because of the tilt in the Earth's axis, the first day of spring in the southern hemisphere is September 22nd.
The first day of spring.
I know in the midle east it's March 21 same as earth day( first day of spring)
The first day of spring is called vernal equinox!
There are 24 hours in the first day of spring, just as there are in each of the other days of the year. The duration of daylight on that day depends on the latitude of your location on the earth's surface.
That's the situation from the first day of Spring until the first day of Fall.Maximum tilt toward the sun is the first day of Summer.
The first day of spring in 2008 was March 20th.
The first day of spring in 1953 was on March 20th.
The first day of spring in 1975 was on March 20th.
The first day of spring in 1992 was on March 19th.
The first day of spring in 1958 was on March 21st.