![]() He hired an Egyptian astronomer, Sosigenes of Alexandria, and together they built their own Roman solar calendar. Since he had been fighting a civil war, the Pontifex Maximus had not been doing his duty, so by 46 B.C., it was out by about three months.Ĭaesar had spent some time in Egypt and was inspired by their solar calendar. As the Roman Lunar Calendar only had 355 days, it would drift out of sync with the seasons if the Pontifex Maximus (also Caesar) didn't monitor it and add days where appropriate. On that day, the debts noted in an accounting book called the kalendaria had to be paid off.Īfter Julius Caesar seized power, he decided to reform the Roman calendar in 46 B.C. Calare meant "to announce", or "to call out." The priests observed the new moons from the Capitoline Hill, and when they saw it, they would announce the number of days until the next month. The word calendar derives from the Latin calendae, which meant the first day of the Roman month, marked by a new moon in the sky. In prehistoric times, long before such ingenious inventions as a date to date calculator, most peoples around the world would orient their time around the lunar phases and the changes of the seasons. It may seem quite complicated, but luckily, you can just input the dates into the time and date calculator and bask in the luxury of having a computer work out the problem for you. If you don't want to include the end date, subtract 1 from the result: You do this by subtracting the date (here 4) from the total number of days in the month:Īdd the result to the day of the month the end date is (just the number part of the date, here 2):Īdd the results (Y, M, D from points 1-3) to get the number of days between and : Multiply each month by the corresponding number of days and add them together:Ĭalculate the remaining days left in the start date's month - September in our example (how many days from 4.09 until the end of the month). ![]() In case you don't - February has 28 (29 in a leap year) days, September, April, June, and November have 30 days each, and the rest have 31.įrom to, there are three full months - October, November, and December. ![]() You need to know how many days there are in each month.
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