"Calendar glitch hai," the third user commented on Instagram. "By 1582, the Julian calendar, with a Leap Day every four years, had accumulated TEN extra days relative to Earth's orbit.

A tweet going viral claims to show that the month of October in the year 1582 had 10 fewer days than usual. Many internet users are surprised at this unusual claim.

Another user wrote, "To align the calendar with the solar year more accurately, 10 days were removed in October 1582." "Calendar glitch hai," the third user commented on Instagram.

The calendar had 10 days missing, which shocked everyone. While everything appears to be in order in the calendar, the only catch is that the date October 4 is preceded by October 15 in the year 1582.

In 1582, Pope Gregory XIII introduced the Gregorian calendar. Prior to this, most of the Roman world and Europe had used the Julian calendar, introduced by Julius Caesar in 45 BCE.

October 1582 isn’t exactly a year which went down in history. It certainly doesn’t have the same familiarity as 1066 (the Battle of Hastings), 1969 (the US moon landing) or 1914 (the start of ...

On the iPhone calendar app, the days from October 5, 1582 and October 14, 1582 are missing entirely, leaving social media users to puzzle over why this might be the case (stock image) ...

Ten days of birthdays lost! The Gregorian calendar came into use in Roman Catholic countries in October 1582, when Thursday, Oct. 4, was followed by Friday, Oct. 15.

As IFLScience explained in 2023, the Catholic church adopted the Gregorian calendar in October 1582. Prior to this, most of Europe had used the Julian calendar, introduced by Julius Caesar in 45 BCE.