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Time zone - Wikipedia, the free encyclopedia |
 | | UTC, atomic time at Greenwich, is too inaccurate, differing by as much as 0.9 s from UT1, creating an error of 0.4 km in longitude at the equator. |
| | However, DUT can be added to UTC to correct it to within 50 ms of UT1, reducing the error to only 20 m. |
| | In terms of the largest number of time zones, Russia is first, with eleven time zones, including Kaliningrad on the Baltic Sea. |
| en.wikipedia.org /wiki/Time_zone (2733 words) |
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