Here's one from each of six continents:
A large part on North and Central America use Central Standard Time (UTC - 6 hours). Central America and parts of Canada use it all year, much of Canada, the United States, and ten Mexican cities along the U. S. border use it from November to March, and most of Mexico uses it from October to April.
A large part of Brazil uses Brasilia Time (UTC - 3 hours). Some states use it all year, and some states use it only from February to October.
A large part of Europe uses Central European Time (UTC + 1 hour) from October to March.
Seven and a half African countries, including Rwanda, Zimbabwe, and the eastern half of the Democratic Republic of the Congo use Central Africa Time (UTC + 2 hours) all year.
Thailand, Vietnam, Cambodia and Laos use Indochina Time (UTC + 7 hours) all year.
About a third of Australia uses Central Standard Time (UTC + 9.5 hours). The Northern Territory uses it all year, and the State of South Australia and a small part of New South Wales use it only from April to October.
When places are not using Standard Time, they are using what North America calls Daylight Saving Time and what South America, Europe, Africa and Australia calls Summer Time.
* One asterisk indicates that part(s) of the time zone switch(es) to Summer Time or Daylight Saving Time for part of each year.
** Two asterisks indicate that the whole time zone switches to Summer Time or Daylight Saving Time for part of each year.
I count 142 time zones, with 39 different offsets from Coordinated Universal Time (UTC).
Central Standard Time is the North American time zone where the time is UTC - 6 hours and which includes...
A standard time zone is a geographical (most often geopolitical) zone throughout which the time has been standardized to the same setting. Before standard time zones were introduced in the 19th century, each city had its own time setting, with noon being when the sun was at its highest point in the sky as seen from that city. As transportation and communication became much faster, the need for a less confusing system became much stronger.
"Standard Time" is also used to specify the winter time setting in places that observe "Summer Time" or "Daylight Saving Time" during part of the year.
A time zone is an area on Earth throughout which clock settings have been standardized to the same time.
A standard time zone is a geographical area throughout which clock time is the same by agreement, despite how much actual local mean time varies across the area.
The Prime Meridian
The Central Standard time zone lies between the Eastern Standard and Mountain Standard time zone.
Colorado is in the Mountain time zone. Or referred to as MDT - Mountain Daylight Time.
Eastern Standard Time zone {EST} = GMT-5 Central Standard Time zone {CST} = GMT -6 Mountain Standard Time zone {MST} = GMT -7 Pacific Standard Time zone {PST} = GMT -8 Alaska Standard Time zone {AST} = GMT -9 Hawaii Standard Time zone {HST}= GMT -10
The entire state of Louisiana is in the Central time zone.
Mississippi is in the US Central Standard Time Zone which is also called GMT - 6.
The Central Standard time zone lies between the Eastern Standard and Mountain Standard time zone.
Colorado is in the Mountain time zone. Or referred to as MDT - Mountain Daylight Time.
Eastern Standard Time zone {EST} = GMT-5 Central Standard Time zone {CST} = GMT -6 Mountain Standard Time zone {MST} = GMT -7 Pacific Standard Time zone {PST} = GMT -8 Alaska Standard Time zone {AST} = GMT -9 Hawaii Standard Time zone {HST}= GMT -10
The entire state of Louisiana is in the Central time zone.
Mississippi is in the US Central Standard Time Zone which is also called GMT - 6.
Eastern Standard Time
Pacific Standard Time zone
It is a time zone covering one hour.
There are 15 degrees of longitude in each standard time zone
Israel standard time India standard time Irish standard time
Eastern Pacific time.
Oklahoma is in the Central Time Zone.