What are time zones, how many are there in the world, how many does the us have?

Question

What are time zones, how many are there in the world, how many does the us have?

Answer 1

Time zones

Time zones are a way of organizing time so that people living in a large area (country, part of continent) share the same time, just to make things easy. People living at about the same longitude usually have about the same local time. There are 25 standard time zones around the world, these are all an integer offset of hours to UTC-time, for example, +5 hours or -10 hours to UTC. If UTC-time is 12:00 (Noon/PM), then people having offset +5 hours, have local time 17:00 (or 5:00 PM).

Then... there are some countries/places not using the standard time zones, they might be 5 hours and 45 minutes ahead of UTC, like Kathmandu is or some other non-integer offset of hours.

The US has Pacific, Central,Mountain and Eastern time zones.

Answer 2

There's 24 in the world;  know why?  The US has 7 when you count Alaska.

Answer 3

The world is divided into 24 time zones because the time is not the same everywhere. For instance on the side of the earth facing the sun the time might be between 10 AM and 5 PM, while on the other side of the earth whee it is dark, the time migh be some2where between 9PM and 5 AM.  Obviously there are 12 time zones between noon and midnight.. The US has 6 different time zones.

Answer 4

TIME ZONES

- A time zone is a region of the Earth that has adopted the same standard time, usually referred to as the local time. Most adjacent time zones are exactly one hour apart, and by convention compute their local time as an offset from Greenwich Mean Time

http://www.google.com.ph/search?hl=tl&q=...

http://en.wikipedia.org/wiki/Time_zone

There are 40 time zones in the world.

"There are 40 time zones instead of 24 (as popularly believed). This is due to fractional hour offsets and zones with offsets larger than 12 hours near the International Date Line as well as one unofficial zone in Australia. ..."

http://en.wikipedia.org/wiki/List_of_tim...

There are four main time zones in the USA, namely:

- Pacific Standard Time

- Mountain Standard Time

- Central Standard Time

- Eastern Standard Time

http://images.google.com.ph/images?um=1&...

For the complete list of USA time zones, here it is:

- UTC-11 Samoa Time Zone

- UTC-10 HST Hawaii-Aleutian Standard Time

- UTC-9 AKST Alaska Standard Time

- UTC-8 PST Pacific Standard Time

- UTC-7 MST Mountain Standard Time

- UTC-6 CST Central Standard Time

- UTC-5 EST Eastern Standard Time

- UTC-4 AST Atlantic Standard Time

- UTC+10 Chamorro Time Zone

http://en.wikipedia.org/wiki/List_of_U.S...

Answer 5

basically, you would have 24 time zones in the world, In the US, there are 4 major time zones, plus Alaska and Hawaii, Arizona is a special case...no daylight savings time, and then you have Guam and Puerto Rico.