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.
Click for images updated every 10 minutes. The autumnal equinox marks the beginning of autumn in the northern hemisphere and spring in the southern hemisphere. This year it takes place at 7:31 am EDT on September 23 when the Sun crosses the equator heading south. On the day of the equinox sunlight and darkness are of almost equal length.