I do not advise navigating by the sun. It’s a mathematical mess with all parts in motion, the sun, the sea, you. Pure chaos. If you must get in a boat, stick to the coastline where you can see landmarks, read the marine life, always the same fish in the usual places, watch the birds.
If you have to cross the open sea do it at night, when you can travel by nice comfortable starlight. The stars are dependable, they never deceive, but the sun will burn you the first chance it gets. It’s shifty, you can’t trust it, not unless you know it really well. Look at it right now. Don’t look at the sun. Remember where it was yesterday? It’s shifted its position along the horizon. it does it every day all year long, and not uniformly. Its movements vary depending upon your longitude and the time of year. If you … More
The dark obscures everything and restricting one’s travel to only daylight hours can be limiting depending on latitude and season. To travel by night successfully 
