Fol. 20:

The coloured and ornamented calendar disc glued to the manuscript was done separately. Its content repeats the information given in the tables on fols. 19v-20, concerning the counting of the four seasons (Tishri, Tevet, Nisan and Tammuz), which covers 28 years.

The disc is divided into three concentric circles. The outer one is segmented into ten unequal sections: five sections are inscribed with the seasons' names and the word "Question" alternated with five others painted in green, yellow, ochre and magenta and decorated with a running dog motif. The second circle is divided into 28 sections with alternating days of the week in each. The inner circle divided as the second one, is inscribed with different time-frames in the 24-hours period in each section. The time frame starts with the letter yod or lamed, meaning "day" or "night". The centre of the circle is blank.