[1] The ancient and medieval era Sanskrit texts of India vary in their calculations about the duration of Karkata, just like they do with other months.
For example, the Surya Siddhanta calculates the duration of Karkata to be 31 days, 11 hours, 24 minutes and 24 seconds.
[5] In contrast, the Arya Siddhanta calculates the duration of the Karkata month to be 31 days, 11 hours, 13 minutes and 36 seconds.
[5] The Indian solar month names are significant in epigraphical studies of South Asia.
The Karkaṭa month (spelled as Karkataka) is found inscribed in Chola Empire monument such as the Valisvara temple near Tamil Nadu–Andhra Pradesh border.