Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
1 retrograde period in 1942
41 days in Makara
3 retrograde periods in 1942
22 days in Makara
24 days in Vrishabha
21 days in Kanya
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.
