The Octalendar is a perpetual leap week calendar design that divides the year into 8 months of exactly 6 or 7 weeks, alternating 7:6. That means, every odd month has 49 days and every even month has 42 days, except for the last, eighth one in leap years when it has 49 days instead. The date format is ISO-like ±YYYY-M-W-D. All usual date conventions comply with ISO 8601, i.e. weeks start on Monday and the leap week depends on the Gregorian leap rule and year count. Cal7 also has months with 7 weeks, but alternates them with ones of 8 weeks (8:7), totalling in just 7 months.
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| - The Octalendar is a perpetual leap week calendar design that divides the year into 8 months of exactly 6 or 7 weeks, alternating 7:6. That means, every odd month has 49 days and every even month has 42 days, except for the last, eighth one in leap years when it has 49 days instead. The date format is ISO-like ±YYYY-M-W-D. All usual date conventions comply with ISO 8601, i.e. weeks start on Monday and the leap week depends on the Gregorian leap rule and year count. Cal7 also has months with 7 weeks, but alternates them with ones of 8 weeks (8:7), totalling in just 7 months.
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abstract
| - The Octalendar is a perpetual leap week calendar design that divides the year into 8 months of exactly 6 or 7 weeks, alternating 7:6. That means, every odd month has 49 days and every even month has 42 days, except for the last, eighth one in leap years when it has 49 days instead. The date format is ISO-like ±YYYY-M-W-D. All usual date conventions comply with ISO 8601, i.e. weeks start on Monday and the leap week depends on the Gregorian leap rule and year count. Two adjacent months can be grouped to form a quarter or season of 13 weeks. Only the final quarter spans 14 weeks once per 5 to 6 years. Cal7 also has months with 7 weeks, but alternates them with ones of 8 weeks (8:7), totalling in just 7 months.
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