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Friday 13th of year 1987*

Year:  Date:  

Dates:

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*) Note that the date-calculations here is only valid for dates in the Gregorian calendar.
This was implemented at different points in time in different countries;
1582: Spain, Portugal, Italy and the Catholic states of Germany
1700: Protestant parts of Germany
1812: Switzerland (actually during 1583-1812)
1752: Great Britain and her colonies (including the United States)
1753: Sweden (including Finland)
1867: Alaska (Russia -> USA)
1917: Ottoman Empire
1918: Russia, Estonia
1919: Romania, Yugoslavia
1923: Greece
1927: Turkey
2016: Saudi Arabia (!)

The timeline can be found here: Wikipedia/Adoption_of_the_Gregorian_calendar