When was the calender changed and why. when was new years day

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Clarification of Question by csausy-ga on 10 Dec 2005 02:54 PST

When was the calender changed and why. when was new years day first
held on january 1st

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Request for Question Clarification by rainbow-ga on 10 Dec 2005 03:01 PST

Does the explanation on the following website suffice as an answer to
your question?

http://www.novareinna.com/festive/newyear.html

Best wishes,
Rainbow

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Clarification of Question by csausy-ga on 10 Dec 2005 03:20 PST

About 160 years ago new year was changed to January. Why?  and what
year was it. does it also mean that one year was shorter. how does it
effect history dates.

What country are you in?  The change first happened more than 160
years ago, though not all countries switched at the same time. 
Catholic countries under papal influence were first.

In 1582, Pope Gregory XIII introduced the new Gregorian Calendar.  Ten
days were deleted from the calendar, so that October 4, 1582 was
followed by October 15, 1582, and New Year's Day was moved to January
1.  One popular story credits the reform of the calendar to King
Charles IX (born 1550 AD? died 1574 AD) in 1563.  Notice this is prior
to the "Gregorian calendar" change and the pope's edict in 1582.  It
is known that the Council of Trent (1545-1563) did authorized a
calendar reform in 1545, so it is possible that King Charles IX could
have moved New Year's Day to January 1 before the decree was made by
Pope Gregory XIII.