In Astrology Mathematical astrology is as important as Predictive astrology. Mathematical astrology is the base through which astrology determines the nakshatra and planetary positions and predicts there by. In this article we will discuss Kaala Bala a component of Shad-bala through which planetary strengths are measured.
 
Kaala Bala means the Time Strength. More specifically we can say that the planets receive Time Strength which is permanent from various sources.  Time Strength is sub-divided in to six parts namely, Nataunnata Bala (diurnal strength), Paksha Bala (Moon phase strength), Tribhaga Bala (day night strength), Varsha, Maas, Dina Bala (Year, month, day strength), Yuddha Bala (planetary war strength) and Ayan Bala (equinoctial strength).

In this article we will discuss about the first three sub-divisions of Time Strength of planets.

Nataunnata Bala

In Nataunnata Bala the Moon, Saturn and Mars are stronger during midnight and  weaker during midday. The Sun, Jupiter and Venus get stronger at midday and are less stronger at midnight. In Time Strength of planets Mercury  always has full strength.

The Sun, Moon and Mars acquire 60 points when a native is born at midnight. The same planets receive 0 point when a native is born at noon time. The Sun, Jupiter and Venus get 60 points when a native is born during midday and has 0 point when a child is born during midnight.

Paksha Bala

The Paksha Bala is related with the lunar phase. There are two pakshas in a month named: Krishna paksha and Shukla paksha. A paksha is of 15 days. According to Shad Bala auspicious planets are strong during Shukla paksha.

Jupiter, Moon and Venus have auspicious influence on Mercury for 8 days during Shukla and Krishna paksha. These planets are strong in Shukla paksha. The Sun, Mars and Saturn have inauspicious impact on Mercury for 8 days during the two paksha. These planets are strong in Krishna paksha.

The Moon has 120 points on New Moon and Full Moon day. Moon becomes strong with 60 points during the paksha and deeply influences human lives. To determine the strength of paksha the difference between the longitudes of Sun and Moon has to be found out.

If the angle is greater than 180 degree then it has should be subtracted from 360 degrees. The result is divided by 3 to get the final result which is the paksha strength of a planet. The formula for determining paksha strength of planet is

3 – (Moon / Sun) = Paksha Bala of the planet

Tribhaga Bala

In Tribhaga Bala the day and night are divided into three parts. Jupiter always gets 60 points in Tribhaga Bala. If a child is born at the first half of the day then her kundli will have strong Mercury with 60 points.
 
If the birth time of a native is on the second half of the day then Sun is strong with 60 points and if the birth has taken place in the third part of a day then Saturn is strong in her kundli with same points.

The Moon gets 60 points if a child is born in the first part of the night. Venus is strong in the kundli if a birth takes place on the second half of the night and Mars is strong with 60 points if a child is born in the third part of the night.