I agree with the others, don't treat bigeminy. ...It's some kind of EMS lore that never seems to die that bigeminy is a terribly malignant rhythm and has to be squashed no matter what the consequences.
The meaning of the autumn equinox is intertwined with that of the four points of the year (the two solstices, and the spring equinox), which each mark stages in the esoteric work that begin anew each year, and form a symbolic cross in the wheel of the year, with the sun (Son/Christ) at the center.
Autumn: When the Leaves Fall. Autumn begins with the autumnal equinox (September 22, most years). The equinox is the point at which the sun is directly over the equator. From this point throughout the season, the pole is beginning to point away from the sun. The hemisphere is getting more night hours than daylight and this has a cooling effect.