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The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours. This is indicated by the hours (and minutes) passed since midnight, from 00 (:00) to 23 (:59), with 24 (:00) as an option to indicate the end of the day. This system, as opposed to the 12-hour clock, is the ...
Equinox. A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September.
The 12-hour clock was used throughout the British empire. During the 15th and 16th centuries, the 12-hour analog dial and time system gradually became established as standard throughout Northern Europe for general public use. The 24-hour analog dial was reserved for more specialized applications, such as astronomical clocks and chronometers.
Release. June 2, 2009. ( 2009-06-02) Earth 2100 is a television program that was presented by the American Broadcasting Company (ABC) network on June 2, 2009, and was aired on the History Channel in January 2010 and was shown through the year. Hosted by ABC journalist Bob Woodruff, the two-hour special explored what "a worst-case" future might ...
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In the Back to the Future franchise, the DeLorean time machine is a time travel vehicle constructed from a retrofitted DMC DeLorean. Its time travel ability is derived from the "flux capacitor", a component that allows the car to travel to the past or future (though not through space). This occurs when the car accelerates to 88 miles per hour ...
Our Final Hour is a 2003 book by the British Astronomer Royal Sir Martin Rees. The full title of the book is Our Final Hour: A Scientist's Warning: How Terror, Error, and Environmental Disaster Threaten Humankind's Future In This Century—On Earth and Beyond. It was published in the United Kingdom under the title Our Final Century: Will the ...
The Greenwich 24-hour analog clock at 14:06:49 UTC. The hour hand is at an angle of 211° 42′ 15″ from vertical, making the time 211° 42′ 15″ in NET. An example New Earth Time analog clock. New Earth Time (or NET) is an alternative naming system for measuring the time of day proposed in 1999. In NET the day is split into 360 NET ...