The internal clock

Practice makes perfect. The human brain is amazing and highly trainable. Every time you want to check a clock, make a guess at the time first. Before long you will be hitting close. During the course of a day I am usually within 5 and about always within 10 min. Keep in mind that is during a regular day with a couple hours between checks. This is similar to how police can estimate your speed. With a little practice of guessing before mechanically checking they can get within a couple mph very consistently. Also when I want to know time until sunset I use an extended fist and count fingers for 15 min /. Good thread.
 
Back
Top