13-Month Sol Calendar
0° Aries Start13 fixed months of 28 days (4 weeks starting on Sunday), with Sol between June and July. Anchored to the Vernal Equinox (☉ 0° Aries) and mapped 1-to-1 with the ephemeris.
Sol Settings
13 Months × 28 Days · 0° Aries Start
13-Month Fixed Calendar
Year begins on the Vernal Equinox (☉ 0° Aries). Every month has 28 days (4 weeks) starting on Sunday, with Sol between June and July.
← Switch to 12-Month Gregorian CalendarSelect a chart to see when the moon activates your natal placements.
Vedic Astrological Data
Chinese Astrological Data
Pick any standard Gregorian date to jump to its corresponding 13-month Sol date.