Tomorrow the spring starts at 10.01: Do you know that every year it starts at a different hour?

After many days of heavy rains, it seems a lie that we are about to enter the warm spring station. But the reality is that from 10.01 in the morning, in the northern hemisphere we will welcome spring, day indicated in the calendar as a spring equinox. But, Does this phenomenon occur every year at the same time and the same day? No.

It is a special, original moment at least, in which the sun is exactly over the Earth’s Ecuador. Result? The day and night have approximately the same duration throughout the planet. The following consequence is that in the northern hemisphere, in which we live, The days begin to be longer than the nightsalso giving emerging flowers … and allergies. That is, temperatures begin to rise as a prelude to summer. Just the opposite that happens in the southern hemisphere.

But, unlike other days indicated in the calendar, the arrival of spring does not always happen the same day. Can range between March 19 and 21due to factors, precisely astronomical. And there is a difference, which many can ignore, between the civil and astronomical year.

The reason for the leap years

The civil year is the one we use in the Gregorian calendar and that has, yes or yes, 365 days (366 in the leap years), while The astronomical or tropic year (that is, what the earth takes for a turn around the sun) is not “assessed” in an exact figure. Because It usually takes 365 days, 5 hours, 48 ​​minutes and 45 seconds. Approximately. And there lies the problem, in which there are about 6 hours apart between one and the other.

In fact, that small 6 -hour difference is what forces to correct it thanks to the leap yearsa solution that does not prevent us from entering each year in the spring period the same day and, much less, at the same time.

Last year, without going any further, we left the winter behind 4 hours and 6 minutes in the morning of March 20. In 2023, we accessed that time of better temperatures, with permission from The storms that so overwhelmed these daysat 9 pm and 24 minutes on the same day, March 20. In the case of three years ago, spring officially exploded in our 2022 calendar at the time of the one Sunday’s nap, specifically at 16.33 of “ours” northern nap.