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.
In the Southern Hemisphere, this equinox is known as the autumnal, or fall, equinox and marks the start of the fall season; the vernal equinox for the Southern Hemisphere occurs in September. The March equinox happens at the same moment across the world but is converted to local time.