Note:  Do not rely on this information. It is very old.

Clog Almanac

Clog Almanac, a form of almanac anciently in use, consisting generally of a four-sided piece of some hard wood upon which the different days of the year were marked down. Each side would contain three months, the days being marked by notches, the first day of the week having a larger notch than the others, or otherwise distinguished, and against festivals or other remarkable days symbols were drawn to denote them. Some of the existing almanacs have Runic (q.v.) characters. Great variety of style naturally existed in their arrangements. Many museums contain specimens.