This calendar is based of off Symmetry454, with changes I think make it more suitable for gardening. It consists 4 seasons (Spring, Summer, Fall, and Winter) and 12 months(Early Spring, Middle Spring, Late Spring, Early Summer, Middle Summer, Late Summer, Early Fall, Middle Fall, Late Fall, Early Winter, Middle Winter, and Late Winter). The Early and Late months are 4 weeks and the Middle months are 5 weeks.
The epoch is January 1, 2018 which is the same date in this calendar and the Georgian calendar. This means that the Solstices and Equinoxes occur in the Early month of each season. This helps to offset the seasonal lag between insolation and air temperature.
The leap year occurs when the remainder of ( 52 × Year + 146 ) / 293 is less than 52. In leap years, an intercalary week is added to the end of Late Winter.
- Replace the 4 seasons (Spring, Summer, Fall, and Winter) with 6 seasons (such as Prevernal, Vernal, Estival, Serotinal, Autumnal, and Hibernal) These could either be left whole or split into Early and Late.
- The intercalary week could be moved to a different Early or Late month.