My own little mnemonic to remember which direction the sun rises and which it sets. Surprisingly helpful for figuring out what direction you are facing — by where the sun is and the rough time of day. Also, for figuring out what time it’s likely to be in a different country — is it earlier in the morning for them or later in the day?
I’ve also always wondered if the East/West coast of America is fundamentally affected by the sun — the East coast gets the sea sunrises, great for early birds catching worms, and the West coast gets the sea sunsets, great for romantic evenings and all night parties. Who knows.