The Quinta Calendar is a proposed calendar invented by 'Duncan McGregor' that uses a 5-day week called a Quinta and each year has a whole number of these Quintas.
The Year[]
The calendar year has 12 months (January to December) each of 30 days equal to 6 quintas. The first month (January) is preceeded by a single quinta called Yule. Leap years have a leap quinta after the last month (December)
Leap Year Rule[]
The leap year rule is one of two suggested by Karl Palmen. Every year whose number is divisible by 20 is a leap year, unless its number is also divisible by 640. The resulting mean year is 365.2421875 days.
Epoch[]
The new year is intended to occur close to the northern winter solstice. The 21 December 1968 is suggested as the first day of year 0 Anno Spatii. Negative numbers would be used for earlier years.