Indian lunar calendars are based on the cycles of the Moon, with the new moon marking the beginning of each month.

The Gregorian Calendar is a solar calendar, while the Saka Calendar, Vikram Samvat, and Bangla Calendar are all lunar calendars used in India.

The Saka Calendar is widely used in the western states of India, including Gujarat, Maharashtra, and Rajasthan.

The Vikram Samvat calendar is widely used in North India for religious festivals, traditional events, and historical dating.

The Bangla Calendar is primarily used in the eastern states of India, including West Bengal, Odisha, and Assam.

The full moon day (Purnima) holds religious significance in India, with many festivals and ceremonies associated with it, such as Kartik Purnima and Guru Purnima.

The Malayalam Calendar is a solar calendar with lunar influences, commonly used in the state of Kerala.

Tithi is the traditional Indian unit of time based on the lunar cycle, representing the period between two successive sunrises.

The Tamil Calendar is a solar calendar with lunar influences, commonly used in the state of Tamil Nadu.

The new moon day (Amavasya) holds religious significance in India, with many festivals and ceremonies associated with it, such as Diwali and Shivaratri.

The Telugu Calendar is a solar calendar with lunar influences, commonly used in the state of Andhra Pradesh.

Nakshatra is the traditional Indian unit of time based on the lunar month, representing a specific constellation through which the Moon passes.

The Kannada Calendar is a solar calendar with lunar influences, commonly used in the state of Karnataka.

Yoga is the traditional Indian unit of time based on the lunar fortnight, representing a specific combination of tithi and nakshatra.

The Marathi Calendar is a solar calendar with lunar influences, commonly used in the state of Maharashtra.