CLST 214 Lecture Notes - Lecture 17: Divisor, Leap Year
31 Oct 2017
School
Department
Course
Professor
Document Summary
Need to know: the date and the position in the zodiac. Calendar on slides: first column: years. Me. in-between numbers: second column: change in iii, third column: dates of stations. Mul-babbar = jupiter: fourth column: point of station. Where in the zodiac jupiter comes to a station. Length of hour: longer hours in the summer on a sundial, opposite in the winter. Babylonians are predicting the positions of jupiter to an impressive accuracy: greeks are struggling with a different set of problems. Greeks: most revolve around calendars, gregorian calendar is an elegant piece. Tuesday, october 18, 2016: every 4 years, you add one day. 2016, 2020, 2024: extra rule in gregorian calendar. 1600, 1700, 1800, 1900, 2000: divisible by 4, should have a leap year. 1600 = no leap year, 1700/1800/1900 = leap year, 2000 = no leap year: keeps our calendar in check. X13 = 383 days: end of ramadan (eid) changes every year, backwards to our calendar.
