The subdivisions (antara-antardasa) of a subperiod (bhukti or antardasa treated in its turn as a whole) are to be obtained by multiplying the number of days composing the particular bhukti chosen by the number of years of the mahadasa of the planet whose antara is required, and dividing the product by the figure representing the maximum Ayus in years for the quarter asterism concerned. The quotient will be in days etc. In this way, the big, small and smaller divisions of a planetary period styled Rasa, Antardasa, Antara and Vidasa may be obtained.