I appreciate those who have expressed their opinions on the calendar issue. First, I have been deeply interested in the Calendar question for over thirty years. The old calendar is supposed to be astronomically inaccurate, and the new calendar fixes this.
All calendars are inherently astronomically inaccurate.
The holy fathers who established the Church calendar knew perfectly well that assigning the vernal equinox to a fixed date was astronomically inaccurate. Yet, they went ahead and did this. By maintaining the traditional Paschalion while changing the fixed calendar, the Typicon goes out the window. The Apostles' Fast is severely shortened or even ends before it begins in certain years. Copernicus among other astronomers was adamantly opposed to the Gregorian calendar change.