The Sexagesimal calendar by Edouard Vitrant is a solar calendar with 365 days in normal years and 366 days in leap years. There are six subdivisions (named sixths) of the year with 60 days. Each sixth is divided into ten 6-day weeks (named sweek). The five resp. six remaining days are placed between the sixths.
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- Sexagesimal calendar / Edouard Vitrant