The calendar below is a Gregorian calendar with mostly Julian dates.  Unless otherwise stated, the general rule is that if the date is from a Russian document, or marks an event that occurred in the Russian Empire before January 31, 1918, it uses the Julian calendar.  Dual dates may be added over time.

If having all dates in Gregorian is important to your research, use this tool to convert the Julian dates: Converting between Julian and Gregorian Calendar in One Step