By weather, by stars
Ancient civilizations had some additional methods. Among them were sundials, and burning candles or incense. Water clocks were used in Babylon and Egypt. Hourglasses were a late medieval development.
There are three ancient clocks they are:-1.Sundail2.Hour glass3.Pendelum
sun dial,water clo ck,
do clocks use energey
the ancient egyptians.
Keeping time, in the days before mechanical clocks.
You turn the clocks back because the days get longer.
Any Encyclopedia will report that clocks were invented in ancient times, as sundials are primitive clocks. As for mechanical clocks, there are public clocks from the 14th which are still on display in the Science Museum in Britain. See http://www.sciencemuseum.org.uk/on-line/wells-clock/index.asp
silk road
He didn't invent it, but improved on it. Clocks have been in use for thousands of years. The Chinese had a water clock and by the 1300's in Europe there were candles to measure time. The ancient Greeks and Egyptians had clocks as well.
Ctesibus was a Greek inventor who made water clocks with moving figures on them.
Time and attendance clocks are used by employers to track the days and hours worked by employees. They can either be physical clocks which stamp the time, or electronic clocks which store times digitally.
they used it for illegal use