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The Imperial Family / Re: Confusion on calendars.
« on: September 21, 2020, 08:58:09 PM »
Before the adoption of the Gregorian Calendar in 1918 Russia used the Julian Calendar. At the time Olga, Tatiana and Maria were born, that calendar was 12 days behind the Gregorian Calendar, but in 1900 the Old Style Julian Calendar had a leap year where February 28 was followed by the 29th. But in the Gregorian Calendar used by other countries there was no leap year in 1900, so it was March 1st. That put the Old Style Julian Calendar 13 days behind.