Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
1 retrograde period in 2012
81 days in सिंह
1 retrograde period in 2012
139 days in तुला
3 retrograde periods in 2012
23 days in मीन
24 days in कर्कट
20 days in वृश्चिक
1 retrograde period in 2012
43 days in वृष
1 retrograde period in 2012
118 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.
