# The Great Calculation According to the Indians, of Maximus Planudes - On the Circle of the Zodiac

Author(s):
Peter G. Brown

Let us now make some comments about the zodiac, degrees, first parts, and secondary parts.36 Note then that the sun passes through the 12 signs of the Zodiac as it passes through its cycle. Each of these is divided into 30 degrees and each degree is divided into 60 primary parts and each primary part into 60 secondary parts, and each secondary part into 60 tertiary parts and so on forever. Astronomers ignore all the rest and only concern themselves with 4 quantities, that is, the signs of the Zodiac, degrees, primary parts, which they simply call 'minutes' and 'seconds' leaving out the mention of 'parts' from the 'seconds' and 'primary' from the 'minutes'.

$\begin{array}{|cccc|}\hline {\rm{Zodiac}} & {\rm{Degrees}} & {\rm{Minutes}} & {\rm{Seconds}} \\ \hline 0 & 22 & 57 & 35 \\ \hline 3 & 18 & 44 & 52 \\ 4 & 23 & 54 & 49 \\ 2 & 25 & 32 & 25 \\ 1 & 14 & 45 & 29 \\ \hline 2 & 22 & 12 & 2 \\ \hline \end{array}$