Jupiter Mahadasha, Saturn Antardasha (Guru–Shani)

The Saturn antardasha is the second of the nine sub-periods inside the Jupiter mahadasha. 16 × 19 ÷ 120 makes the Jupiter–Saturn sub-period 2 years 6 months 12 days on the classical year of twelve thirty-day months, which is how the texts state it, or 925 days on the solar year of 365.2425 days that the dasha calculator uses.

Saturn’s turn in the Jupiter mahadasha comes only after Jupiter has run, which takes 2 years 1 month 18 days. When the Jupiter–Saturn sub-period gives way to Jupiter–Mercury, 11 years 4 months of the Jupiter mahadasha remains.

Saturn’s 19 years make every Saturn antardasha 19/120 of the mahadasha containing it, so inside Jupiter’s 16 years the Jupiter–Saturn sub-period is the second-longest of the nine.

The Nine Pratyantardashas of Jupiter–Saturn

A pratyantardasha of Jupiter–Saturn is 16 × 19 × its own lord’s years ÷ 14,400, and the nine run in cycle order starting from Saturn. Venus’s is the longest inside Jupiter–Saturn at 152 days and the Sun’s the shortest at 46 days, on the classical year and rounded to the day.

How Jupiter and Saturn Stand to Each Other

On the natural friendship table, Jupiter and Saturn each count the other neutral. The Jupiter–Saturnrelationship is mutual, so it reads the same from either lord.

Counted between the signs they own, Capricorn is the 2nd from Jupiter’s Sagittarius, Aquarius is the 3rd from Jupiter’s Sagittarius, Capricorn is the 11th from Jupiter’s Pisces and Aquarius is the 12th from Jupiter’s Pisces. Whatever the ascendant, the houses Jupiter rules and the houses Saturn rules sit at those same distances from each other in the chart, so the Jupiter–Saturn sub-period always joins lordships that far apart.

Jupiter is debilitated in Capricorn, a sign Saturn owns. In the Jupiter–Saturn sub-period, then, one lord's dignity is placed on the other’s ground.

The Same Pair the Other Way Round: Saturn–Jupiter

16 × 19 equals 19 × 16, so the Jupiter antardasha of the Saturn mahadasha is exactly as long as Jupiter–Saturn: 2 years 6 months 12 days. Nothing else about Saturn–Jupiter matches. It is the ninth sub-period of Saturn’s 19 years rather than the second of Jupiter’s 16; it opens after 16 years 5 months 18 days of the Saturn mahadasha, against 2 years 1 month 18 days here; and its pratyantars start from Jupiter instead of Saturn.

What the Texts Assign to Jupiter and Saturn

The karaka list the tables give Jupiter, the mahadasha lord, is children, teachers and gurus, higher learning and dharma; for Saturn, the lord of the Jupiter–Saturn sub-period, it is karma, labour, servants, iron, coal and delay itself. Parashari practice reads the sub-period through the houses each of the two owns and occupies in the birth chart, and through where Saturn stands counted from Jupiter there. None of that is a forecast, and this page makes none: without a chart, Jupiter–Saturn is a length and a position, and the 2 years 6 months 12 days above is the whole of what can be said about it in general.

A birth with the Moon in Punarvasu, Vishakha or Purva Bhadrapada opens life inside the Jupiter mahadasha itself, part-way through, and whether the Jupiter–Saturn sub-period is still ahead depends on how far the Moon had gone into the nakshatra. For a birth in Pushya, Anuradha or Uttara Bhadrapada, the Saturn mahadasha comes first, and the Jupiter mahadasha is the ninth in that sequence.

The Other Sub-Periods of the Jupiter Mahadasha

The full table for the Jupiter mahadasha, with where each sub-period opens and closes, is on the Jupiter mahadasha page. How the Jupiter mahadasha is read as a whole is in our Jupiter mahadasha article, and the system itself in Vimshottari dasha explained. This page in Hindi: गुरु महादशा में शनि अंतर्दशा.