You cannot reliably determine a place's time zone by its longitude. The best you can do is to calculate the local mean time for the longitude. That is because every country is free to choose whatever time zone(s) it wants, and therefore there are many places where the time zone is not the local mean time rounded to the nearest hour.
To calculate the local mean time at a certain longitude when it's noon UTC, using x° for x° east and -x° for x° west, add 180° to the longitude, multiply by 4 minutes per degree, and divide by 60 minutes per hour.
360° of longitude divided by 24 time zones gives 15° per time zone (average)
No line of longitude bends, but the time-zone boundaries are defined to depart from the meridians in order to accomplish that.
Greenwich outside London, Britain.prime meridianGreenwich Meridian_____________Clarification. Each of the world's basic time zones is 15 degrees of latitude wide. It should be obvious that 15 degrees times 24 equals 360 degrees, accounting for the entire globe. The system of latitude and longitude was established in Greenwich with Greenwich at zero degrees longitude, but the time zones were defined in such a way that Greenwich is in the middle of its zone. That time zone extends for 7.5 degrees to the east and to the west of the Greenwich meridian, defining its full 15 degrees.
A time zone typically spans 15 degrees of longitude, as there are 24 hours in a day and 360 degrees of longitude around the Earth. This means each time zone covers four meridians, one for each hour.
-- Latitude is not connected with the passage of time. -- The sun crosses 15 degrees of longitude per hour. So if you know your own longitude, somebody else's longitude, and what time it is over at his place, then you can figure out the solar time where you are. Really seems like a lot of effort and hassle, when you could just ask somebody what time it is, or look at your watch.
Zulu Time = UTC
There is no such longitude. The maximum degrees for lines of longitude is 180 east and west only.
There are 15 degrees of longitude in each standard time zone
360° of longitude divided by 24 time zones gives 15° per time zone (average)
No line of longitude bends, but the time-zone boundaries are defined to depart from the meridians in order to accomplish that.
latitude and longitude
It is a time zone.
The time zone centered at 120° west longitude is UTC-8.
That would be zero degrees longitude.
Greenwich outside London, Britain.prime meridianGreenwich Meridian_____________Clarification. Each of the world's basic time zones is 15 degrees of latitude wide. It should be obvious that 15 degrees times 24 equals 360 degrees, accounting for the entire globe. The system of latitude and longitude was established in Greenwich with Greenwich at zero degrees longitude, but the time zones were defined in such a way that Greenwich is in the middle of its zone. That time zone extends for 7.5 degrees to the east and to the west of the Greenwich meridian, defining its full 15 degrees.
A time zone typically spans 15 degrees of longitude, as there are 24 hours in a day and 360 degrees of longitude around the Earth. This means each time zone covers four meridians, one for each hour.
-- Latitude is not connected with the passage of time. -- The sun crosses 15 degrees of longitude per hour. So if you know your own longitude, somebody else's longitude, and what time it is over at his place, then you can figure out the solar time where you are. Really seems like a lot of effort and hassle, when you could just ask somebody what time it is, or look at your watch.