Anonymous ID: 19c4de Oct. 4, 2020, 4:20 p.m. No.10922525   🗄️.is 🔗kun   >>3061

>>10922425

FOUND IT!~~~~

 

DESCRIPTION

On October 4, 1582, the Gregorian calendar entered into force, which we still use today almost all over the world. "Stealing" 10 days to put online the calculation of the time of the previous calendar and the duration of the calendar year.

 

On October 4, 1582, people experienced, going to sleep, a real journey into the future. The days between October 5th and 14th were literally erased from the calendar, and we awoke the following morning which was already the 15th of the same month. All the fault of the introduction of the Gregorian calendar.

 

Quick recovery. 1582 actually lasted 10 days less. This period of time was declared non-existent by Pope Gregory XIII, who wanted with this reform to overcome the displacement between the Julian calendar, introduced by Julius Caesar in 46 BC. and used until then, and the trend of the calendar year, against which we were, at that time, late.

 

Phase displacement. The calendar year, in fact, lasts precisely 365 days, 5 hours, 48 minutes and 46 seconds and not just 365: not having taken into account this "gap" for centuries had caused the spring equinox to fall, as well as marked by sundials, March 11, 10 days earlier than scheduled. And consequently, the date set for Easter – which falls on the Sunday following the first full moon of spring – was also hitting.

 

The difference. To make up for lost time, this drastic measure was then taken, with the papal bull Inter gravissimas, the result of a four-year work in agreement with the doctor Luigi Lilio and the astronomer Cristoforo Clavio. The new Gregorian calendar was very similar to the previous one (with years of 365 days and one leap every 4), with the difference that the leap years of the centenary years not multiple of 400 were suppressed.

 

Wildfire. First entered into force in Catholic countries such as Italy, Spain and Portugal, the Gregorian calendar is now for its practicality in use in much of the world, with some exceptions.

 

The Julian calendar. The relationship with calendars, however, has always been difficult. They had to be cyclically adjusted. What happened with Gregory XIII also happened 1500 years earlier, with Julius Caesar: in 46 BC Cesare commissioned the Alexandrian astronomer Sisogene to equalize the dates with respect to the seasons (the spring equinox fell … at the beginning of winter). It was established that 46 a. C. had 445 days; the previous chaos was such that it was called ultimus annus confusionis. Sisogene defined a year of 365 days, with a leap year every 4: it was the Julian calendar.

 

https://www.42doit.com/education-en/how-the-gregorian-calendar-was-born-the-cancellation-of-10-days/