Hindu Calendar- Era ब्रहस्पती चक्र or Jovian Cycles The cycle of Jupiter is considered as one of the most ancient chronological systems, not only in India, but in Tibet, China, and Myanmar But why did Jupiter cycles come into prominence? I think, just as we count short periods From sunrise to sunrise – One day From lunation to lunation of Moon- One Month From season to season – One Year. A twelfth part is one month Jupiter’s orbit around the Sun is 12 years. A twelfth part is one Solar year or a Jovian month. Jupiter takes about 12 years to complete a round of the zodiac. (Actually, it takes 4332.59 days or 11.862 years) This method was easy to monitor, time longer than one year, as one could observe Jupiter returning to its original position at the end of 12 years. Observing a 60-year cycle was not practical and was hence calculated as per siddhantas and Karana works. Jupiter has two cycles, the 12-year and 60-year cycles, which were/are being followed. The 60-year cycle origina...
The cosmos has a lot of hidden facts, and we are not aware of them. Humans have been learning from the heavens and updating their lives since ancient times. In doing so, we have forgotten the efforts of the previous generation who had opened the cosmos to us. Some facts we knew, but had no proof of, as we unfold and update, the facts confirm their findings. My effort is to bring out these fundamentals as given in ancient Hindu texts