Local time or local clock time is the time you can see on a clock at your location. It is the time used in your whole time zone.
Introduction of Clock Times only in the 19th Century
There was no clock time in the old ages when the classical methods of time optimized acupuncture were established.
People lived in a natural environment and the sun was the pacemaker of their lives.
Clock time and time zones were introduced only in the 19th century along with the appearance of railways and timetables.