What is the Correct Time? The Development of Time Scales From GMT to UTC and NTP Servers
Asking somebody the time may be one of today’s most common questions but have you ever wondered where the time on our watches comes from? Accurate clocks have only been around since the mid 17th century, before then, time was completely subjective. People would use the celestial bodies as a time reference such as noon (when the sun was highest) and midnight (when the moon is at its highest) and also dawn and dusk.
