Vishuddha Siddhanta Panjika
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Vishuddha Siddhanta Panjika (Bengali: বিশুদ্ধ সিদ্ধান্ত পঞ্জিকা) is a panjika (almanac) that was first published in 1297 Bengali year (1890 AD). Madhab Chandra Chattopadhyay of the Bengal of undivided India was the first editor.
The 19th century Bengali almanacs that gave details of tithi, nakshatra, etc. were generally not in conformity with the position of planets. A true panjika has to tally with the scientific observation. To meet this end, prominent astrologers of that time — almanac reformist of Orissa Mahamahopadhyay Chandrashekhar Sinha Samanta, Lokmanya Bal Gangadhar Tilak of Pune, Western India, scriptural scholars like Bapudev Shastri and Ketkar, experts like Kashi Madan Mohan Malaviya, Maha mahopadhyay Maheshchandra Nyayaratna, Sasadhar Tarkachudamani, Acharya Yogesh Chandra Roy Vidyanidhi of Bengal — advised the publication of Vishuddha Siddhanta Almanac.
Approval and adoption
Vishuddha Siddhanta Almanac is recognized by scholars of scriptures such as Deshikottama Dr Srijiv Nyayaratna, mathematics scholar Nirmal Chandra Lahiri, internationally known scientist Prof Megh Nad Saha, et al.
This almanac is approved and followed by Sankaracharya Jayendra Saraswati of Kanchi matha, Sri Tarakeshwar Math, worldwide Ramakrishna Math and Ramakrishna Mission, Satsanga Ashrama of Deoghar and other religious organisations.
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.