Maybe you have found a IDX file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a IDX file related error message. Before you can open a IDX file, you'll need to figure out what kind of file the IDX file extension refers to. Tip: Incorrect IDX file association errors can be a symptom of other underlying issues within your Windows operating system.
There are two equinoxes every year â in March and September â when the Sun shines directly on the equator and the length of night and day are nearly equal. The Earth during the equinox. (Not to scale)On the equinox the Earth's axis is perpendicular to the Sun's rays.
On the Vernal exuinox it is the first day of spring (March 20th) and on an Atumnal equinox its the frist day of fall   The â¦ sun is vertically overhead the Equator, this occurs twice per year, once with the northen hemisphere heading towards the sun, and once with it heading away from the sun.he spring Equinox occurs on April 21 st. The fall Equinox is on September 21 st. The summer Solstice occurs on June 21 st and the winter Solstice occurs on December 21 st. 2 people found this useful.