Abby, Your last observation is quite correct. In fact all “New Calendar” Orthodox Churches use two calendars at the same time. They use the Gregorian system for all the fixed Feast Days and the Julian system for all the moveable Feast Days. This practice upsets the Old Calendarists because, in certain years, the Apostle's Fast, which has a fixed date but must follow Pentecost—a moveable feast—can disappear entirely.

Since, in the Orthodox Church, the observance of Pascha is calculated using March 21, Julian, as the fixed date of the vernal equinox, the moveable feasts will eventually march clear through the Gregorian calendar.

      - Mark