Retrograde periods for Mercury, Venus, Mars, Jupiter and Saturn. Rahu and Ketu are always retrograde by convention.
3 retrograde periods in 2021
21 days in मकर
24 days in वृष
21 days in कन्या
1 retrograde period in 2021
141 days in मकर
1 retrograde period in 2021
120 days in कुम्भ
1 retrograde period in 2021
41 days in धनु
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.
