Years. Months. Days. 4 11 Over tenth column, lower division. 4 11 -- -- 9 2 Over ninth column, lower division. 4 11 -- -- 13 13 Over eighth column, lower division. 4 11 -- -- 1 0 4 Over seventh column, lower division. 4 11 -- -- -- 1 4 15 Over sixth column, lower division. 4 11 -- -- -- 1 9 6 Over fifth column, lower division. 4 11 -- -- -- 1 13 17 Over fourth column, lower division. 4 11 -- -- -- 2 0 8 Over third column, lower division. 4 11 -- -- -- 3 4 19 Over second column, lower division. 4 11 -- -- -- 2 9 10 Over first column, lower division. 4 11 -- -- -- 2 14 1 Over tenth column, middle division. 4 11 -- -- -- 3 0 12 Over ninth column, middle division. 4 11 -- -- -- 3 5 3 Over eighth column, middle division. 4 11 -- -- -- 3 9 14 Over seventh column, middle division. 4 11 -- -- -- 3 14 5 Over sixth column, middle division. 4 11 -- -- -- 4 0 16 Over fifth column, middle division. 4 11 -- -- -- 4 5 7 Over fourth column, middle division. 4 11 -- -- -- 4 9 18 Over third column, middle division. 4 11 -- -- -- 4 14 9 Over second column, middle division. 4 11 -- -- -- 5 1 0 Over first column, middle division. The red numerals over the first column of the middle division, except the lowest diamond shaped one, are omitted, as they do not appear to belong to the series. It must be borne in mind that the 4 months and 11 days form the common difference between the corresponding days of the columns counting from right to left; that is to say, counting 4 months and 11 days from the top day of any column will bring us to the first or top day of the next column to the left. The interval between the other corresponding days of the columns is also the same if the same week numbers are assigned them.