1803edo: Difference between revisions
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{{Harmonics in equal|1803}} | {{Harmonics in equal|1803}} | ||
=== | === Theory derived from the saros cycle and leap cycle MOSses === | ||
In real life, 1803 years is 100 times the saros cycle, designed to predict eclipses. In addition, it also makes for both the leap week and the leap day calendars that excellently approximate the March equinox—22300 lunar months is almost exactly 658532 days or 94076 weeks. | In real life, 1803 years is 100 times the {{W|saros cycle}}, designed to predict eclipses. In addition, it also makes for both the leap week and the leap day calendars that excellently approximate the March equinox—22300 lunar months is almost exactly 658532 days or 94076 weeks. The associated calendar structures produce [[maximal evenness]] scales that can be used to produce a variety of different temperaments. | ||
The simplest are the rank-2 temperaments produced by 1803 years being able to support a leap day, leap week, and a lunisolar calendar all in one. | The simplest are the rank-2 temperaments produced by 1803 years being able to support a leap day, leap week, and a lunisolar calendar all in one. | ||