No feasts or fasts are lost from the Catholic liturgical year on account of the Gregorian calendar. If you are saying that the issue is how to adjust without sacrificing such dates, no permanent sacrifice of a feast or fast is necessary - just a one-time change. The Church dealt with this by literally skipping ten days in the Calendar - and She did so in October, to avoid missing any important feasts:
The most surreal part of implementing the new calendar came in October 1582, when 10 days were dropped from the calendar to bring the vernal equinox from March 11 back to March 21. The church had chosen October to avoid skipping any major Christian festivals. So, in countries that adopted the new calendar, the Feast of St. Francis of Assisi on October 4, 1582, was directly followed by October 15. France made the transition separately in December. [1] (britannica.com)
The Church thinks of everything!
Wiki says the Apostle’s Fast has “been forgotten in the West”.
https://en.m.wikipedia.org/wiki/Apostles%27_Fast
How sad, but I imagine the problem stemmed from the fact you can’t fit it in the Western Liturgical year. Probably had something to do with that Gregorian Calendar.
If you are saying that the issue is how to adjust without sacrificing such dates, no permanent sacrifice of a feast or fast is necessary - just a one-time change.
Things aren’t so simple when you’re working with fixed dates and moveable dates. We’re juggling two calendars. It varies from year-to-year.
So far, there hasn’t been a good fix.
(post is archived)