For a more in-depth world map:
Here are the time zones in the US:
Time zone name - Sample time in relation to other time zones, starting at 1:00 AM in Hawaii - GMT offset
Hawaii: 1:00 AM , GMT offset= -10:00
Alaska: 2:00 AM, GMT offset= -09:00
Pacific: 3:00 AM, GMT offset= -08:00
Mountain: 4:00 AM, GMT offset= -07:00
Central: 5:00 AM, GMT offset= -06:00
Eastern: 6:00 AM, GMT offset= -5:00
1. How many time zones are there in the U.S?
4 in the continental US, 6 if you want to include Alaska and Hawaii as time zones
2. What is Daylight Savings Time? I am given to understand it applies in WINTER, but am a bit lost on how it works.
You have to remember "Spring ahead, fall behind".
In the spring, clocks are turned one hour ahead (daylight savings time), and in the fall, they are turned one hour back (standard time). I believe this originated a long time ago, and it had something to do with farming... (e.g. kids would be able to get out of school early, or something like that). I'm not totally sure on the history, though
3. Is ET(US) -4:00 G.M.T.? What does ET stand for?
ET = Eastern Time. It's -5:00 GMT.
Just FYI, here's some standard abbreviations:
(adding a D or an S between the two letters shown would mean daylight or standard time, respectively)
- ET = Eastern Time
- PT = Pacific Time
- CT = Central Time
- MT? = Mountain Time
Hopefully this answered your question!