Motion of the Chakra

The motion of the kalachakra procedes through the 12 rasis. So the normal gati will from aries to taurus etc. until pisces is reached.

But Kalachakra is more complicated: there is a change of signs that depends on the ambiguity of the rasi lords.

Rule: signs having the same lords will be exchanged.

The same thing is shown in the table below. Reverse signs are shown in yellow.

Step #	Lord	Direct Motion	Reverse Motion
1	Mars	Aries	Scorpio
2	Venus	Taurus	Libra
3	Mercury	Gemini	Virgo
4	Moon	Cancer	Cancer
5	Sun	Leo	Leo
6	Mercury	Virgo	Gemini
7	Venus	Libra	Taurus
8	Mars	Scorpio	Aries
9	Jupiter	Sagittarius	Pisces
10	Saturn	Capricorn	Aquarius
11	Saturn	Aquarius	Capricorn
12	Jupiter	Pisces	Sagittarius

This movement can be compared with a planet having direct and retrograde motion. It is like a wheel that goes up and down, or like a pendulum.

Getting the Kalachakra Amsa

Calculation of the Kalachakra Amsa is as follows

Savya: the Amsa is the same as the Navamsa of the Moon n the birth chart.
Apsavya: the amsa is the dual sign. So Aries Navamsa of the Moon will yield Scorpio Amsa etc. Cancer and Leo Navamsa will always stay the same.

The table below summarizes the Amsas.