I haven't written any logs for a long time. I recently studied the Gregorian and lunar calendar. When I used Microsoft's calendar control, I was bored to see how many years it could last. I was surprised to find that it was only in 1753.
It turns out that the current Gregorian calendar is the gelgori calendar, which is not consecutive and lacks 11 days in the middle. The date that follows September 2, 1752 is September 14, 1752.
It was the decision of the British Parliament on 1752 to erase these 11 days.
The reason why Microsoft did not join the previous date should be because of the chaos of the previous date. The 11-Day dates removed by countries are not uniform:
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Albania:
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December 1912
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Austria:
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Different regions on different dates
Brixen, Salzburg and Tyrol:
5 Oct 1583 was followed by 16 Oct 1583
Carinthia and Styria:
14 dec 1583 was followed by 25 dec 1583
See also Czechoslovakia and Hungary
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Belgium:
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See the Netherlands
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Bulgaria:
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31 Mar 1916 was followed by 14 Apr 1916
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Canada:
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Different Areas changed at different times.
Newfoundland and Hudson Bay coast:
2 Sep 1752 was followed by 14 Sep 1752
Mainland Nova Scotia:
Gregorian 1605-13 Oct 1710
Julian 2 Oct 1710-2 Sep 1752
Gregorian since 14 Sep 1752
Rest of Canada:
Gregorian from first European settlement
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China:
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The Gregorian calendar replaced the Chinese calendar in 1912, but the Gregorian calendar was not used throughout the country until the communist revolution of 1949.
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Czechoslovakia (I. e. Bohemia and Moravia ):
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6 Jan 1584 was followed by 17 Jan 1584
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Denmark (including Norway ):
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18 Feb 1700 was followed by 1 Mar 1700
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Egypt:
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1875
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Estonia:
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31 jan 1918 was followed by 14 Feb 1918
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Finland:
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Then part of Sweden. (note, however, that Finland later became part of Russia, which then still used the Julian calendar. the Gregorian calendar remained official in Finland, but some use of the Julian calendar was made .)
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France:
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9 Dec 1582 was followed by 20 dec 1582
Alsace: 5 Feb 1682 was followed by 16 Feb 1682
Lorraine: 16 Feb 1760 was followed by 28 Feb 1760
Strasbourg: February 1682
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Germany:
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Different States on different dates:
Catholic States on various dates in 1583-1585
Prussia: 22 Aug 1610 was followed by 2 Sep 1610
Protestant states: 18 Feb 1700 was followed by 1 Mar 1700
(Repeated local variations)
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Great Britain and colonies:
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2 Sep 1752 was followed by 14 Sep 1752
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Greece:
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[9 Mar 1924 was followed by 23 Mar 1924
(Some sources say 1916 and 1920)]
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Hungary:
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21 Oct 1587 was followed by 1 Nov 1587
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Ireland:
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As Great Britain
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Italy:
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4 Oct 1582 was followed by 15 Oct 1582
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Japan:
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The Gregorian calendar was introduced to supplement the traditional Japan calendar on 1 Jan 1873.
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Latvia:
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During German occupation 1915 to 1918
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Lithuania:
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1915
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Luxemburg:
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14 dec 1582 was followed by 25 dec 1582
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Netherlands:
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Zeeland, brabrant, And the ''staten generaal '':
14 dec 1582 was followed by 25 dec 1582
Holland:
1 Jan 1583 was followed by 12 Jan 1583
Limburg and the southern provinces (currently Belgium ):
20 dec 1582 was followed by 31 Dec 1582
Or
21 dec 1582 was followed by 1 Jan 1583
Groningen:
10 Feb 1583 was followed by 21 Feb 1583
Went back to Julian in the summer of 1594
31 Dec 1700 was followed by 12 Jan 1701
Gelderland:
30 jun 1700 was followed by 12 Jul 1700
Utrecht and Overijssel:
30 Nov 1700 was followed by 12 dec 1700
Friesland:
31 Dec 1700 was followed by 12 Jan 1701
Drenthe:
30 Apr 1701 was followed by 12 May 1701
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Norway:
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Then part of Denmark.
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Poland:
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4 Oct 1582 was followed by 15 Oct 1582
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Portugal:
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4 Oct 1582 was followed by 15 Oct 1582
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Romania:
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31 Mar 1919 was followed by 14 Apr 1919
[The Greek Orthodox parts of the country may have changed later.]
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Russia:
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31 jan 1918 was followed by 14 Feb 1918
[In the eastern parts of the country the change may not have occurred until 1920.]
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Scotland:
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See Great Britain
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Spain:
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4 Oct 1582 was followed by 15 Oct 1582
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Sweden (including Finland ):
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17 Feb 1753 was followed by 1 Mar 1753 (see note below)
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Switzerland:
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Catholic cantons: 1583,158 4 or 1597
Protestant cantons:
31 Dec 1700 was followed by 12 Jan 1701
(Repeated local variations)
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Turkey:
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Gregorian calendar introduced 1 Jan 1927
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USA:
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Different Areas changed at different times.
Along the eastern seaboard: with Great Britain in 1752.
Mississippi valley: with France in 1582.
Texas, Florida, California, Nevada, Arizona, New Mexico: with Spain in 1582
Washington, Oregon: with Britain in 1752.
Alaska: October 1867 when Alaska became part of the USA.
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Wales:
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See Great Britain
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Yugoslavia:
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1919
So, Microsoft has been directly starting from 1753.-specific people can see http://www.tondering.dk/claus/cal/node3.html#SECTION00311000000000000000
