Time between each line is 60 min for 1 year. 23h 56 min 4 sec is the time earth take to rotate exactly 360 degrees. So you can figure out the rest that with a 24h day its gonna continue to go more and more to right. However that's not what happends. Also the degree difference between highest and lowest line is about 42 degrees and that don't make any sense at all. This is 9500 lines of data copied from stellarium, so no trickery or anything. Also i drawing it out from a fixed point on Earth i mean fixed longitude and latitude.