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  2. Clock drift - Wikipedia

    en.wikipedia.org/wiki/Clock_drift

    Clock drift refers to several related phenomena where a clock does not run at exactly the same rate as a reference clock. That is, after some time the clock "drifts apart" or gradually desynchronizes from the other clock. All clocks are subject to drift, causing eventual divergence unless resynchronized.

  3. Year 2038 problem - Wikipedia

    en.wikipedia.org/wiki/Year_2038_problem

    Many computer systems measure time and date using Unix time, an international standard for digital timekeeping.Unix time is defined as the number of seconds elapsed since 00:00:00 UTC on 1 January 1970 (an arbitrarily chosen time based on the creation of the first Unix system), which has been dubbed the Unix epoch.

  4. Daylight saving time - Wikipedia

    en.wikipedia.org/wiki/Daylight_saving_time

    During an autumn transition from 02:00 to 01:00, a clock shows local times from 01:00:00 through 01:59:59 twice, possibly leading to confusion. [149] Many farmers oppose DST, particularly dairy farmers as the milking patterns of their cows do not change with the time, [121] [150] [151] and others whose hours are set by the sun. [152]

  5. National Debt Clock - Wikipedia

    en.wikipedia.org/wiki/National_Debt_Clock

    The clock at its former location near Sixth Avenue and 44th Street in February 2017, at which time it read $19.9 trillion in national debt. The National Debt Clock is a billboard-sized running total display that shows the United States gross national debt and each American family's share of the debt.

  6. Timeline for the day of the September 11 attacks - Wikipedia

    en.wikipedia.org/wiki/Timeline_for_the_day_of...

    At the time Kaminski was in "Chopper 880", WCBS' helicopter that he reports from for morning and evening rush hour traffic reports. The following consists of WCBS anchor Pat Carroll crossing to Kaminski in the chopper before he files his report. Pat Carroll: WCBS news time, 8:48, it's traffic and weather together sponsored by Henry Miller's ...

  7. Marine chronometer - Wikipedia

    en.wikipedia.org/wiki/Marine_chronometer

    A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation.It is used to determine longitude by comparing Greenwich Mean Time (GMT), and the time at the current location found from observations of celestial bodies.

  8. Clock angle problem - Wikipedia

    en.wikipedia.org/wiki/Clock_angle_problem

    The time is usually based on a 12-hour clock. A method to solve such problems is to consider the rate of change of the angle in degrees per minute. The hour hand of a normal 12-hour analogue clock turns 360° in 12 hours (720 minutes) or 0.5° per minute. The minute hand rotates through 360° in 60 minutes or 6° per minute. [1]

  9. Indian Standard Time - Wikipedia

    en.wikipedia.org/wiki/Indian_Standard_Time

    The Indian Standard Time was adopted on 1 January 1906 during the British era with the phasing out of its precursor Madras Time (Railway Time), [2] and after Independence in 1947, the Union government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Calcutta Time and Bombay Time) until 1948 and 1955, respectively. [3]