Vishuddha Siddhanta Panjika

The calculations of the almanac are fully done with the help of computers to show the accuracy of the renderings and, therefore, the timing of the puja and parvan for occasions are free from any mistake. Hence the Indian national calendar (Rashtriya Panchang) published by the Government of India fully tallies with the almanac.

However, the traditional school also has its validity. Jyotish Shastra is not astronomy, and it is based on the words of Parashara, Garga, Mantreshwara who never used computers or western astronomy. Further, the planetary positions of Jyotish-nakshatra, rashi-or rahu, Ketu etc. depend more on belief and assumptions than science.

Vishuddha Siddhanta Panjika provides articles on astrology and astronomy; annual predictions for the nation on subjects ranging from agriculture to politics; predictions on individual lagnas; and annual predictions on the basis of birth-stars. There are other regular sections like vedic months and dates from the Indian national calendar.

Daily declination of the Sun, equation of time, sidereal time, planetary aspects, correct times of the eclipses, rising and setting times of the moon in different places, rising and setting times of the sun in Kolkata and seven other cities, monthly description of the night sky and locations of the stars and planets with explanatory sky maps are given. The dates of the main celebrations for the coming year are mentioned. An important addition is the dates of birth and death of many savants and saints of India irrespective of denominational adherence.

• Bisuddha Siddhanta Panjika Software 5000 BC to 5000 AD for your PC and mobile
• Bengali calendar according Vishuddha Siddhanta Panjika following Indian Standard Time Archived 2019-01-08 at the Wayback Machine
• Bengali calendar according Vishuddha Siddhanta Panjika following Bangladesh Standard Time^{[permanent dead link]}