Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
1 retrograde period in 2018
124 days in तुला
3 retrograde periods in 2018
23 days in मीन
24 days in कर्कट
20 days in वृश्चिक
1 retrograde period in 2018
141 days in धनु
1 retrograde period in 2018
62 days in मकर
1 retrograde period in 2018
42 days in तुला
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.
