An equindox is a term that combines "equinox" and "indox," although it is not a widely recognized or established term in astronomy or related fields. The equinox refers to the times of the year when day and night are of approximately equal length, occurring around March 21 (vernal equinox) and September 23 (autumnal equinox). If "equindox" is intended to convey something specific, it may need further clarification or context.