A few days separate us from the beginning of the spring semester 2022.. When does it start?

Weather of Arabia - Four seasons follow each other regularly every year, and the four seasons occur mainly due to the tilt of the earth's axis as it revolves around the sun, and each season of the year is characterized by special climatic conditions, where the earth receives during each season a different amount of light The sun and the heat, and the hours of night and day differ on the days of each season.

When does the spring semester start this year 2022?

For meteorologists, spring begins on 1 March, which is the unofficial start of spring, which was determined based on the annual temperature cycle, and climatic patterns. The official start of spring this year will be on Sunday, 20 March 2022 , Spring will last until the summer solstice on Tuesday, June 21, 2022, but what do we mean by the official start of spring?

The beginning of spring astronomically

The official start of spring is on the day of the vernal equinox , which falls on March 20 or 21 of each year in the northern hemisphere, and is on September 22 or 23 of each year in the southern hemisphere.

On this day, the Earth is in an upright position relative to the sun, so the Earth’s axis is neither tilted toward the sun nor away from it, so the day and night are equal in all countries, and after this day the sun’s rays begin to move north of the equator, until it reaches its northernmost point on the summer solstice. .

What is the difference between the beginning of spring astronomically and in meteorology?

• Astronomer: The beginning of spring depends on the movement of the Earth around the sun, which changes the amount of solar energy received by the parts of the Earth, and thus the weather patterns vary.
• In Meteorology: As for the beginning of spring in meteorology, it is determined based on the annual temperature cycle and climatic patterns.

Meteorologists and climatologists divide the seasons into groups, each of three months, based on the similarity in temperature, and the spring season in meteorology includes the three months: March - and April - and May, because The temperatures are roughly the same, and change regularly during those months.

Why were different dates set for the beginning of seasons in meteorology?

Determining dates for the four seasons in meteorology was due to the difference in length from 89 to 93 days in the duration of the seasons astronomically, and it was difficult for experts to compare statistics from year to year, and meteorology and meteorology remain important in studying the beginnings of seasons depending on temperature rates Annually, due to its proximity to what is actually happening on the ground, and this is of great importance to different sectors such as, the agricultural sector, the industrial sector and others.