Every true traveler must know how to do 3 things: fix the fire, find the water and extract useful information from the nature around him. Programming won't help you with the fire and water, but when it comes to the information extraction - it might be just the thing you need.
The time of the day.
The angle of the sun, rounded to 2 decimal places.
sun_angle("07:00") == 15 sun_angle("12:15"] == 93.75 sun_angle("01:23") == "I don't see the sun!"
One day it can save your life, if you'll be lost far away from civilization.
00:00 <= time <= 23:59