The Egyptians were responsible for the 24 hour day. The Eqyptians were fond of counting in base twelve (instead of base 10 which is commonly used today). This is thought to be because they counted finger joints instead of fingers. Each of your fingers has three joints, so if you count by pointing to finger joints with your thumb you can count to twelve on each hand. This might seem arbitrary, but is actually just a strange as counting in base ten simply because we have ten digits.
HOW DO YOU LIKE THAT?
IF THEY USED THEIR FINGERS INSTEAD OF FINGER JOINTS YOU WOULD BE OLDER BECAUSE THERE WOULD BE 20 HOURS IN A DAY INSTEAD OF 24.
SO HOW CAN YOU BE A CERTAIN AGE BASED ON THAT. IT'S NONSENSE
IF YOUR BODY STOPS HEARING FROM YOU HOW OLD YOU ARE, IT WILL CONCENTRATE ON LIVING.
However, hours did not have a fixed length until the Greeks decided they needed such a system for theoretical calculations. Hipparchus proposed dividing the day equally into 24 hours which came to be known as equinoctial hours (because they are based on 12 hours of daylight and 12 hours of darkness on the days of the Equinoxes). Ordinary people continued to use the seasonally varying hours for a long time. Only with the advent of mechanical clocks in Europe in the 14th Century, did the system we use today become common place.
HOW DO YOU LIKE THAT?
THEY DECIDED HOW OLD YOU ARE TO PLEASE THE CLOCK INDUSTRY
THE BABYLONIANS ALSO WERE INVOLVED
THIS IS FROM YAHOO ANSWERS
The ancient Babylonians ( ~3500 BC) divided the hour into 60 minutes, and each minute into 60 seconds. They liked the number 60 for all sorts of things
THEY USED 60 FOR ALL SORTS OF THINGS.
SO DO YOU SEE?
YOU ARE NOT A PARTICULAR AGE BECAUSE NO SUCH THING EXISTS
YOU ARE WHAT YOU ARE
IF YOUR BODY DOES NOT BELIEVE YOU ARE TOO YOUNG OR GETTING OLD, IT
WILL RESPOND DIFFERENTLY.
STOP BEING PROGRAMMED BY ANCIENT PEOPLE WHO COUNTED THEIR FINGERS, AND YOU WILL FEEL A WHOLE LOT BETTER AND DO A LOT BETTER TOO.
IF SOMEONE ASKS YOU HOW OLD YOU ARE , SIMPLY SAY, I DO NOT FOLLOW
MAN MADE TIME.
I FEEL GOOD, I LOOK GOOD, AND ON I GO