yes
The prime meridian is a line of longitude
It's the lines of longitude which are used to define time zones, not lattitude.
The polar and temperate zones and the tropics.
Time Zones are based on lines of Longitude - with detours to avoid land.
the boundaries of times zines almost always fall in state lines, which are indeed not always straight.
The Prime Meridian (0 degrees longitude) and the International Date Line (180 degrees longitude) determine time zones across the globe. Time zones are typically one hour apart for every 15 degrees of longitude difference.
Areas with different times don't follow vertical lines because time zones are based on longitudinal lines that separate different time regions worldwide. Each time zone represents a specific range of longitudes, which means their boundaries aren't aligned with vertical lines on a map. This system allows for better coordination of timekeeping across regions, even if it means the boundaries of time zones don't always align neatly with the lines of longitude.
There are 24 time zones. The Earth is 360 degrees around the circumference. So, for every 15 degrees of longitude there is one time zone.
They do follow the longitude approximately but in some regions there are political reasons for changing them, for example a large part of Russia is on GMT+3 to make things simpler for the people who live there.
In order to avoid splitting a state, county, city, or town with a time-zone boundary. Can you imagine how you might handle your work schedule, dental appointments, bus schedule, or the TV prime-time lineup, if your city had two different time zones in it ?
Lines of longitude tells us where we are in relation to the Prime Meridian, either to the west or east.For an exact position on Earth, both lines of latitude and longitude (in degrees plus minutes and seconds) are used.
The three lines of longitude that pass through Australia are 138°E, 144°E, and 153°E. They are used to divide the country into different time zones.