English
WHAT IS A TIME ZONE?
TIME ZONE AND TIME DIFFERENCE
Time zone means the region where the common standard time is used. There are 24 time zones around the world based on time differences from UTC (Universal Coordinated Time). In some regions daylight saving time (DST) is adopted.
[What is UTC (Universal Coordinated Time)?]
UTC is the universal standard time coordinated through international agreement. It is used as the official time around the world. UTC is determined by adding a leap second to GMT (Greenwich Mean Time), which is determined through astronomical measurement, in order to keep the precise time.
[What is summer time (DST)?]
Summer time is daylight saving time. Advancing the watch one hour to prolong daytime during longer daylight hours in summer. Daylight saving time has been adopted in about 80 countries, mainly in Europe and North America. The adoption and duration of daylight saving time vary depending on the country.
24 TIME ZONES AND TIME DIFFERENCES FROM UTC
EUROPE
(DCF77 from Germany)
| Date line |
JAPAN(JJY) | THE UNITED |
| |
| STATES (WWVB) |
English
34 | 35 |
