Information AboutCommon-civil-calendar-and-time |
| CATEGORIES ABOUT COMMON-CIVIL-CALENDAR-AND-TIME | |
| leap week calendars | |
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In 2004, Dick Henry, a professor of Astronomy at Johns Hopkins University , proposed the adoption of a calendar which he credits to Robert McClennon. It is very similar to the Gregorian Calendar but is identical from year to year in most years. It is kept in sync with the Earth's orbit by adding a whole Intercalary week-long period, named "Newton," at irregular intervals of five or six years. January, February, April, May, July, August, October, and November have thirty days, March, June, September, and December have thirty-one. "Newton" week, in years that contain it, falls between June and July. The list of years that contain "Newton" week must be calculated by computer or obtained from a table or almanac, as it follows no simple rule. There is a Newton year list on the website and these years are exactly the same as the years that have 53 ISO weeks. Henry argues that his proposal will succeed where others have failed because it is the only one that keeps the weekly cycle perfectly intact and therefore respects the Fourth Commandment . However, other calendar proposals that intercalate entire weeks do exist, such as the Symmetry454 calendar. He had advocated transition to the calendar on January 1 , 2006 as that is a year in which his calendar and the Gregorian calendar begin the year in sync. But since that date has been missed, he recommends simply dropping December 31 , 2006 from the calendar and starting on January 1 , 2007 . Robert McClennon's version of the calendar differed from Henry's in that it proposed that the leap week be placed at the end of the year, thereby ensuring that each date of the year is the same day number of the year. It also has a simple rule for determining which years have a leap week. This rule resembles the Gregorian Leap Year rule. Years whose numbers are divisible by 5 have a leap week, but years whose numbers are divisible by 40 do not have a leap week unless also divisble by 400. The main drawback of this rule is that the new year varies 17 days relative to the Gregorian new year. SEE ALSO Calendar Reform EXTERNAL LINKS
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