Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
1 retrograde period in 1980
122 days in Simha
1 retrograde period in 1980
137 days in Simha
1 retrograde period in 1980
81 days in Simha
3 retrograde periods in 1980
23 days in Kumbha
24 days in Mithuna
20 days in Tula
1 retrograde period in 1980
43 days in Mithuna
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.
