there are 12 timee zones
There are 24 main time zones on Earth
Each planet has its own time zones which are related to the speed of rotation of that planet. The times zones of the planet Mars are of only theoretical interest since no one actually lives there, but they are in any event not related to those of Earth.
24
Yes and no. On earth, there are time zones based on where you are located on earth. There are no time zones in space.
There are 24 time zones.
The Earth is divided into 24 time zones, each approximately 15 degrees of longitude wide. This system creates the basis for standard time zones around the world.
There are 24 time-zones around the planet. Measured from Greenwich (near London) in England - they ensure the whole planet lives, sleeps and works relative to the hours of daylight we have. Greenwich Mean Time (now called Universal Time Constant or UTC) is the time zone for the UK, and the standard by which all other time zones around the planet are relative to. There are four time zones in america - Pacific, Central, Mountain & Eastern
Planets have different time zones due to their rotation on their axes. As a planet rotates, different regions are exposed to sunlight at different times, causing variations in local time. This is why different regions on Earth have different time zones based on their position relative to the Sun.
24, One for each hour of the day.
Simply because - if they did, 11am (for example) would be in the middle of the night ! The time zones around the planet - are relative to the time in Greenwich, England,
The earth is divided into 40 formal time zones, not 24 as might commonly be expected. See: http://en.wikipedia.org/wiki/List_of_time_zones for a complete list. Note that the number of time zones also varies with the season as some regions adopt daylight savings time (DST) while others (in the same time zone) choose not to use DST. This can lead to a seasonal increase or decrease in the total number of time zones. According to PHC there are 24 Major time zones
Time zones are to indicate the time in that area due to the sun's position being different at every time zone on the planet