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| | Decimal Time - Time Zones |
 | | Uniform time scales, such as International Atomic Time (TAI) and Terrestrial Time (TT), are also historically based on GMT, but are not kept synchronized with the earth's rotation, and thus increasingly diverge from UT. Many representations of decimal time, such as Modified Julian Dates and astronomical calendar dates, use UT or uniform time scales. |
 | | French decimal time used local true, or apparent, solar time, that is, 5 o'clock on a decimal clock occurred exactly at true noon, when the sun reached its highest point in the sky at the location of the observer, and 10 o'clock was at true midnight, midway between two successive high points. |
 | | Alternately, one time of day might be used everywhere, and individuals and organizations could choose to adjust their own schedules according to when the sun shines in their part of the world, without changing the time of day. |
| www.decimaltime.hynes.net /timezones.html (738 words) |
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