Pratyantardasha — astrology wiki

Also called pratyantar dasha · pratyantara dasha · pratyantardasa · sub-sub-period

In the Vimshottari system, a period of the third level: an antardasha divided among the nine lords in proportion to their years out of 120, beginning with the lord of the antardasha itself. The same division carries on to the sookshma and prana levels.

Word origin · etymology

Sanskrit compound pratyantara-daśā, from prati and antara with daśā, period.

Rao writes that the sub-periods inside antardasas are called pratyantardasas. The first part is prati, which Wiktionary glosses 'towards, near, against, per', and antara, 'within', as in antardaśā; the reading of the compound as 'a period within the inner period' is the site's. No claim is made about when the term was first used.^[1][3]

How we know · epistemology

Nested period arithmetic

The division is a stated proportion applied level after level, so every boundary can be recomputed; Rao describes it for the antardasha and says the same procedure divides each antardasha into pratyantardashas and so on. The length of the periods and the order of the lords are conventions of the system, and a shorter period carries no more evidence than a longer one about what will happen. A minute of error in the birth time moves every date by up to about five days.^[2][4]

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