Eugene Alvin Villar on Nostr: nprofile1q…w0ntj that's a representation of the ecliptic, which is the path the sun ...

nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqa9g4s3n6r8lnxujzt9fv7w3p9gg9wlul3aza4erpq4umcgtkuy8smw0ntj (nprofile…0ntj) that's a representation of the ecliptic, which is the path the sun takes in the sky projected onto the earth. I'm not sure why old maps added them. Probably to help map users determine the sun's latitude during the year. Some newer maps and globes show the analemma instead of the ecliptic and I guess for the same purpose.

You can see the ecliptic on this map:

Several other maps in the following category also have the ecliptic: https://commons.m.wikimedia.org/wiki/Category:Maps_with_stereographic_projection