at all. In the case of Eastern Europe, for example, all of those assumptions would be incorrect. Greece Other countries in Eastern Orthodoxy eventually adopted Gregorian (or new style) dating for their civil calendars but most of these continue to use the Julian calendar for religious purposes. Greece was the last to do so, in 1923. There is a 13-day difference between Old Style and New Style dates in modern Greek history. Romania Romania officially adopted the Gregorian calendar on 1 April 1919, which became 14 April 1919. This was commemorated in 2019 by the National Bank of Romania through the release of a commemorative coin of 10silver lei. Russia In Russia, new style dates came into use in early 1918, when 31 January 1918 was followed by 14 February 1918: there is a 13-day difference between Old Style and New Style dates since 1 March 1900. It is common in English-language publications to use the familiar Old Style and/or New Style terms to discuss events and personalities in other countries, especially with reference to the Russian Empire and the very beginning of Soviet Russia. For example, in the article "The October (November) Revolution," the Encyclopædia Britannica uses the format of "25 October (7 November, New Style)" to describe the date of the start of the revolution. The Americas The European colonies of the Americas adopted the new style calendar when their mother countries did. In what is now the continental United States, the French and Spanish possessions did so about 130 years earlier than the British colonies. In practice, however, most surviving written records of what is now Canada and the United States are from the 20 mainland British colonies, where the British Calendar Act of 1751 was applied twenty-four years before the United States declared independence. Canadian records also include documents of New France that reflect the New Style, as France adopted it in 1582, but the language used in the record is likely to be a good indicator of which calendar was being used for the dates given. The same logic applies to the Caribbean islands. In Alaska, the change took place after the United States purchased Alaska from Russia. Friday, 6 October 1867 was followed by Friday, 18 October. Instead of 12 days, only 11 were skipped, and the day of the week was repeated on successive days, because at the same time the International Date