I am indebted to the web site of the Christian Resource Institute for the basic information presented above, to which I have added a few items. If you want to know more details about the Protestant church calendar - try their site at
www.cresourcei.org. Please note that Catholic and Orthodox Christian calendars will differ. Wodehouse does not refer to the calendar of any other faith. As far as I can tell, all the clergy and festivals etc. are Church of England; indeed, I can only recall one mention of any other denomination.