Answer

In Jain tradition, Dakshinayan usually refers to the period from around mid-July to mid-January — roughly July 16 to January 14.

Explanation

It is the southern movement of the Sun, and it lasts for about six months. Traditionally, it begins around Kark Sankranti and ends around Makar Sankranti.

Spiritual Understanding

In Jain Dharma, this period is important because it is associated with the monsoon season and the Chaturmas period, when monks and nuns stay in one place and focus more on sadhana, study, and penance.

Takeaway

So, simply put: Dakshinayan is the six-month period from about mid-July to mid-January.