To solve the problem related to mean solar time where it varies continuously as a traveler's longitude changes, scientists divided the earth into 24 time zones (adding other partial zones to it). All the countries in each time zones had to keep the mean standard time assigned to it.
<h3>What is Mean Standard Time?</h3>
This is the time that is measured by synchronizing clocks in different geographical locations within the same time zone to the same time.
See the link below for more about Mean Solar Time:
brainly.com/question/26063957
