Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
3 retrograde periods in 1999
23 days in Meena
24 days in Karka
20 days in Vrishchika
1 retrograde period in 1999
78 days in Tula
1 retrograde period in 1999
43 days in Simha
1 retrograde period in 1999
118 days in Mesha
1 retrograde period in 1999
135 days in Mesha
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.
