Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
3 retrograde periods in 2020
22 days in Kumbha
24 days in Mithuna
21 days in Tula
1 retrograde period in 2020
141 days in Makara
1 retrograde period in 2020
43 days in Vrishabha
1 retrograde period in 2020
121 days in Dhanu
1 retrograde period in 2020
65 days in Meena
Rahu and Ketu are the lunar nodes and are always Vakri (retrograde). They move backwards through the zodiac at roughly 1.5° per month and change Rashi only once every ~18 months.
