Hindu calendar

The Hindu calendar used in ancient times has undergone many changes in the process of regionalization, and today there are several regional Indian calendars, as well as an Indian national calendar. In Pakistan it is called 'desi' or native calendar. Most of these calendars are inherited from a system first enunciated in Jyotish Vedanga of Lagadha, a late BCE adjunct to the Vedas, standardized in the Surya Siddhanta (3rd century CE) and subsequently reformed by astronomers such as Aryabhata (499 CE), Varahamihira (6th c. CE), and Bhaskara (12th c. CE). There are differences and regional variations abound in these computations, but the following is a general overview of hindu lunisolar calander.
See more at Wikipedia.org...

Noun
1. the lunisolar calendar governing the religious life of Hindus; an extra month is inserted after every month in which there are two new moons (once every three years)
(hypernym) lunisolar calendar
(part-meronym) Hindu calendar month