No, I don't think so. Olga's birthdate of November 15th, 1895 is actually her birthdate according to the Western , that is, Gregorian calendar of the time. The date on the calendar at her birth in Tsarskoe Selo would have been November 3rd, 1895. This would have been according to the then and there prevailing Julian calendar. The differential between the two calendars became thirteeen days at the start of the 20th century, hence November 3/16. This differential was in effect frozen in place when the Bolsheviks by decree adopted the Western calendar in February, 1918.