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Shop 53 rue Saint André des Arts, Paris 6th - Email: Hello@charlie-paris.com - Tel: 0967411237

Store 53 rue Saint André des Arts, Paris 6th - Email: Hello@charlie-paris.com - Tel: 0967411237

First day of Spring, Why does it fall on March 20 this year ?

Why is the first day of this spring March 20? March 20, Friday, spring, bid farewell to the long and cold winter and the square! Although we are all happy with the change of seasons, many people mistakenly believe that the first day of spring must be March 21. However, there are no exact rules, it can happen between March 19 and 22, depending on the year... But do you know why spring is not always the same? Charlie Paris tells you everything!First of all, we need to study the astronomical phenomena that control the seasonal variation.

  1. What defines seasonal change?
  2. Why isn't spring always on the same day?
  3. Why do people think spring is March 21?

 

1 - what defines seasonal change?

Our calendar is divided into four seasons, their changes are marked by the position of the sun on the earth, in the summer solstice (summer, winter) or equinox (autumn, spring).

In the northern hemisphere, the winter solstice occurs on December 20 or 21, and the summer solstice occurs on June 20 or 21. The winter solstice and the summer solstice are the shortest day and the longest day of the year, respectively.

On the contrary, the equinox corresponds to the apex of the sun at the earth's equator, which means equal sunshine in the northern and southern hemispheres. On this day, the duration of sunshine is almost similar to that of non sunshine. The first equinox occurs between September 21 and 23, and the second equinox occurs between September 21 and 23 Spring, springMarch 19-22.

 

2 - why isn't spring always on the same day?

But if these astronomical phenomena occur once a year, and there's nothing wrong with it, why don't they always appear on the same date?

To answer this question, we have to look at our timetable.

We've been using it since the 16th century Gregorian calendar365 days a year, in principle, is the time when the earth revolves around the sun.

However, the Earth actually takes 365 days, 5 hours and 48 minutes to go around the sun, not just 365 days.

To make up for this, we introduced leap year. Therefore, we add one day in February every four years, so there are 366 days in a year.

However, the combination of these two offsets leads to seasonal variations that do not always occur on the same date. If you have Men's Watch Or one Women's Watch Use the calendar function, please pay attention to the correct calculation of days!

 

3 - why do people think spring will come on March 21?

If you are sure that spring will drive winter out March 21stDon't worry, you're not the only one who thinks so!

In fact, this is a fairly common mistake, which can be explained by the fact that in the 20th century, spring fell more frequently on March 21 (57 times) than on March 20 (52 times).

However, this is an exception, confirming the rule, as it will now have to wait until the spring of 2102 to fall again to March 21.

So not now

What about the timing of all this? We explained all this in another article, which you can find on our watch blog-Yes. Time, season... Ready to set up your Automatic watch Or yours Women's Automatic Watch !

Women's Watch