The 63rd parallel north is a circle of latitude that is 63 degrees north of the Earth's equatorial plane. It crosses the Atlantic Ocean, Europe, Asia and North America.
At this latitude the sun is visible for 20 hours, 19 minutes during the summer solstice and 4 hours, 43 minutes during the winter solstice.
63rd parallel north Wikipedia
Starting at the Prime Meridian and heading eastwards, the parallel 63° north passes through: