An interesting aside the Cotsworth Calendar is such an obvious approach to the months problem it makes me wonder why it was not adopted in the first place. We

An interesting aside the Cotsworth Calendar is such an obvious approach to the months problem it makes me wonder why it was not adopted in the first place. We have 13 months of 28 days each. The 9th is always a Monday the 19th is always a Thursday. "Two months from now" always means the same thing and always means the same number of days. The extra day is New Years Day. It's a holiday and does not belong to any month - or belongs to it's own month if you prefer. On Leap Years there are two of these days.