A Bioregional Calendar A Bioregional Calendar See the calendar There have been many different calendars used by various cultures during different periods. At present human society is dominated by a single calendar system. This is a reflection of a culture of dominance permeating humane society.
All calendars have some relationship with the solar system - the earth, sun and moon.
In humane society growing food is the most important activity. Naturally nothing else can happen if there is no food. For this reason ABC uses the seasons as determined by the solstice and equinox in its basic structure. In A Base the fourth and fourteenth quarts begin on an equinox. The eighth and eighteenth quarts begin on a solstice.