The Sanskrit term for the six-month period starting at the summer solstice is Dakshinayana.
In Hindu astronomical and calendrical traditions, Dakshinayana describes the Sun’s apparent southward movement and the interval leading from the summer solstice toward the winter solstice. The name combines dakshina, meaning “south,” with ayana, meaning “course” or “movement.”
Dakshinayana is paired with Uttarayana, the Sun’s apparent northward course. A common mix-up is confusing Dakshinayana with Makar Sankranti: Makar Sankranti marks the Sun’s entry into Capricorn and traditionally begins Uttarayana, while Dakshinayana is associated with the Sun’s movement toward the south. Exact observance can vary between astronomical and traditional calendar systems.