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.
Equinox is the time of the year when days and nights are of the same length. The equinox occurs twice in a year's time i.e. on 21st or 22nd of March and 22nd or 23rd of September. However, the March equinox can occur as early as 19 March. In 2013, the March equinox came on 20th March.