Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
3 retrograde periods in 1975
21 days in मकर
24 days in वृष
21 days in कन्या
1 retrograde period in 1975
43 days in सिंह
1 retrograde period in 1975
118 days in मीन
1 retrograde period in 1975
75 days in वृष
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.
