User:RicardoSilva1985/sandbox

The 6-Day-Week Permanent Calendar is a proposal for calendar reform. With the 6-Day-Week Permanent Calendar, every calendar date always falls on the same day of the week.

Features
This calendar focuses on making the calendar perennial, so that every date falls on the same day of the week, year after year. The familiar drift of weekdays with respect to dates results from the fact that the number of days in a physical year (one full orbit of earth around the sun, approximately 365.24 days) is not a multiple of seven. This calendar solves this by synchronising the calendar only once a year, at the end of the year.

The calendar features a 6 day week witch renders 60/61 weeks a year (360/366 days). There are two methods to solve the fact a solar year has approximately 365.24 instead of 360 or 366 days. The 61st week may be shorter, with only 5 days, except for leap years which would have a full 6 day weeks in a 366 day year. The other method is to have a full week every year except for leap years occurring every 8 years that would skip this entire week in order to keep the calendar in sync with the solar year (skip week method).

Advantages

 * Calendar days are always the same week day in every month and every year.
 * 6 days weeks are even and can be divided by 2 and 3. No need for gaps days if something must occur every other day or every 3 days as it will always occur in the same week days.
 * Months always have exactly 5 weeks, except once a year.
 * 30 day months are even and can be divided by 2 and 3. This means 10 and 15 days periods are always in sync with the calendar date.
 * Unlike some other reform proposals, it does not change the number and the names of the months.
 * Changing for a 4 working days week in the current 7 days week would greatly reduce the amount of working days, while in a 6 days week we it has little impact.

Disadvantages

 * Birthdays always occur on the same day of the week every year, though many of those with weekend birthdays could see this as an advantage.
 * Birthdays occurring on the last week wouldn't occur every 8 years on the skip week method.
 * The calendar is not as precisely aligned with the solar year as the existing Gregorian calendar and some proposed reform calendars, therefore may require continued use of more accurate astronomic calendars for certain agricultural purposes.
 * If it became the default calendar, all computer date-handling would have to be fixed, which will be much more complicated than the Y2K fix, although the new compatibility with ISO 8601 week dates would help.
 * Month lengths have been stable for over 2000 years (except for the 29th day of February), so are deeply embedded into culture.
 * The changed month lengths do not approximate lunar phases any better.

Category:Proposed calendars Category:Leap week calendars Category:Specific calendars