On the Calculation of Planetary Periods

The stars beginning with Hasta The 13th lunar mansion and the four following it, as well as the stars of Mitra Anuradha, are assigned to Mercury, totaling nineteen years (19). The stars of Purva Purva Phalguni and the sixth thereafter belong to the period of Ketu The South Node of the Moon. The periods of Saturn, the Moon, and Mars follow in sequence, while the period of Venus is assigned twenty years (20). If a birth occurs under a specific star, one must calculate the remaining portion of that planetary period. I shall now explain the method for determining these periods (21).

To find the elapsed portion of a period, one must multiply the passed measures of the lunar mansion Nadi (a unit of time equal to 24 minutes) by the total years of the period. By dividing and calculating the months and days, the remaining time is known (22). To find the sub-periods Antardasha (the secondary planetary influence within a major cycle), the wise should multiply the major period years by nine and then by eight This refers to a specific proportional calculation; the resulting figures represent the months and days in sequence (23).

The method for sub-periods is as follows: multiply the period by its own value and divide by the total cycle. The resulting quotient gives the days and other units of time. Thus, the sub-period within a major period is established. Now, another method for calculating the elapsed time: take the passed Nadis of the birth star, multiply by the total years, and subtract from the total cycle to find the current state (25).

L For Mars, the calculation involves specific fractions of the solar and lunar positions. For Saturn, the calculation is known by the learned to involve the priest's portion referring to Jupiter's influence (26). The period of Mercury is increased by half, while the period of the Moon is considered in conjunction with the Teacher of the Gods Jupiter (27).

The combination of the Sun and Moon's periods is said to equal the period of the Teacher of the Daityas Venus. The sum of all planetary periods together is considered the total measure of a human life (28). To find the sub-period of a desired planet, multiply by five and calculate from the Moon's position (29). The Sun's period, when combined with its own sub-divisions, leads to the calculation of the Fire-God's Krittika star influence (30).

Thus ends the calculation of the periods. Now, regarding the movement of the years: the lords of the periods are associated with specific numerical values such as 20, 33, and 77. The sum of the elapsed days is represented by the figure 80 (31). Multiply the days by the factors of the earth and moon symbolic numbers to reach 792, which helps determine the omitted lunar days. By dividing by 30, the count of months is revealed (32).

In the bright half of the month, count the elapsed lunar days as 751. Multiply by 503 to find the intercalary months Adhimasa (an extra month added to the lunar calendar to sync with the solar year). By subtracting these, the true count is known (33). This explains the calculation of months and the results of the Sun's movement. For a person born at a specific time, the remaining months are calculated starting from the month of Madhu Chaitra, the first month of the Hindu spring.