The Orinoco, the Eio Magdalena, and the Congo or Zaire, are the only great rivers of the equinoctial region of the globe.
That's the simple explanation anyway - you can check the exact equinoctial dates and times here, if you're so inclined.
A star on the north side of the equinoctial is in northern declination, and one on the southern side is in southern declination.
You know, it's s good thing you're coming at the beginning of the month - that way you won't feel the force of the equinoctial storms
But Numa may also have had an equinoctial birthday.
Two large stones also stand almost due east and west to mark the local equinoctial positions of the sun.
Lindley has made us acquainted with a species of Salix belonging to Senegal, and therefore to the equinoctial region of Africa.
They are also equinoctial tides, occurring just after the autumn equinox on September 23, which would normally bring the highest tides of the year.
Outside, the equinoctial storms of mid-September are raging.
The sundial above, dated 1509, shows equinoctial hours with a gnomon parallel to the earth's axis.