He therefore answered, Whether He be a sinner, I know not: one thing I know, that, Whereas I was blind, now I see.
"The Expositor's Bible: The Gospel of St. John, Vol. I"
Marcus Dods
This is due to the fact that Whereas the earth is moving in its ecliptic track around the sun while revolving on its own axis, the First Point of Aries is a fixed point and hence never moves.
"Lectures in Navigation"
Ernest Gallaudet Draper
If the day is fine you need not work out this sight until after evening twilight, for a fix then by stars will give both latitude and longitude, Whereas your afternoon sun sight will only give you a longitude.
"Lectures in Navigation"
Ernest Gallaudet Draper