You are hereUCG.org / Sermons / The Calendar, Part 11: Postponement Rules and... The Calendar, Part 11 Postponement Rules and Additional History Given on Feb 22, 2014 by Steven Shafer Listen Downloads MP3 Audio (11.09 MB) Downloads The Calendar, Part 11: Postponement Rules and Additional History MP3 Audio (11.09 MB) × Purpose of the postponement rules of the Hebrew calendar and history of the Gregorian calendar. You might also be interested in....