The Tropical Year Calendar Julian/Gregorian The tropical year is the time, taken by the Sun, to pass from the vernal equinox to the vernal equinox. It equals 365 days, 5 hours, 48 minutes, and 46 seconds, or 365.2422 days. The tropical year is used, to keep track of seasons, planting, and harvesting. There is a need to create a calendar, with a whole number of days per year to accurately follow the tropical year without losing synchronization with the seasons over a period of time. We begin with a calendar of 365 days per year. Our calendar year is shorter than the tropical year by 0.2422 days. So to correct (approximately), we add 1 day every four years (leap year). Thus, three calendar years are 365 days long; the fourth calendar year is 366 days long. The average length of the calendar year in days now becomes (3 x 365 + 366)/4 = 365.25 days. This calendar system was actually instituted for use in the Roman Empire by Julius Caesar around 46 BC. But since the Julian calen...
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