I was browsing through the information at the start of the Book of Common Prayer today and spotted that it has tables to calculate the date of Easter. Up until the year 2299! I am not sure how old the edition I was perusing was (definitely post-1662 but I would be surprised if it as anything much further than mid-twentieth century) and I don’t know whether the various tables at the start all date back to the 1662 edition but that still seems a very optimistic, particularly given that an earlier table deals with “from the present time till the year 2199 inclusive according to the foregoing calendar” so the 2200 to 2299 is a supplement rather than just a consequence of the method used!