I question the need to include this level of detail at all. Sure, the 28 year cycle is mildly interesting. The only people I can think of who would be interested in the rest are people who's resources are so limited they have to reuse calendars because they can't afford to buy new ones (certainly there are billions of people who can't afford calendars, but will they have access to Wikipedia?) and people who like to perform feats of mental calculation.