Thakur Prasad is a very famous Hindu calendar, Panchang. It is one of various lunisolar calendars that are traditionally used in the Indian subcontinent and South-east Asia, with further regional variations for social and Hindu religious purposes. They adopt a similar underlying concept for timekeeping based on sidereal year for solar cycle and adjustment of lunar cycles in every three years, however also differ in their relative emphasis to moon cycle or the sun cycle and the names of months and when they consider the New Year to start. Of the various regional calendars, the most studied and known Hindu calendars are the Shalivahana Shaka found in the Deccan region of Southern India, Vikram Samvat (Bikrami) found in Nepal, North and Central regions of India – all of which emphasize the lunar cycle. Their new year starts in spring. In contrast, in regions such as Tamil Nadu and Kerala, the solar cycle is emphasized and this is called the Tamil Calendar (Though Tamil Calendar uses month names like in Hindu Calendar) and Malayalam calendar, their new year starts in autumn, and these have origins in the second half of the 1st millennium CE. A Hindu calendar is sometimes referred to as Panchangam, which is known also known as Panjika in Eastern India.

Hindu festivals calendar is also known as Hindu Vrat and Tyohar calendar. The fasting is known as Vrat or Upavas and festival is known as Tyohar or Parva in the local language. Most Hindu festivals calendar include significant fasting days along with festivals. Many Hindu festivals are celebrated while keeping a day-long fast on the festival day. Hence in Hinduism Tyohar(s) is time for celebrations, deity worship and austerity.