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  2. Midnight - Wikipedia

    en.wikipedia.org/wiki/Midnight

    Midnight is the transition time from one day to the next – the moment when the date changes, on the local official clock time for any particular jurisdiction. By clock time, midnight is the opposite of noon , differing from it by 12 hours.

  3. 12-hour clock - Wikipedia

    en.wikipedia.org/wiki/12-hour_clock

    Alternatively, noon may be written as 午前12時 (12 a.m.) and midnight at the end of the day as 午後12時 (12 p.m.), as opposed to 午前0時 (0 a.m.) for the start of the day, making the Japanese convention the opposite of the English usage of 12 a.m. and 12 p.m. [29]

  4. 24-hour clock - Wikipedia

    en.wikipedia.org/wiki/24-hour_clock

    In the 24-hour time notation, the day begins at midnight, 00:00 or 0:00, and the last minute of the day begins at 23:59. Where convenient, the notation 24:00 may also be used to refer to midnight at the end of a given date [3] — that is, 24:00 of one day is the same time as 00:00 of the following day.

  5. 'Sleepwalking into nuclear disaster': The 'Doomsday Clock ...

    www.aol.com/doomsday-clock-reset-comes-tuesday...

    The symbolic clock now reads 89 seconds to midnight after advancing one second since last year's reset. It is now the closest to midnight since the introduction of the clock in 1947.

  6. International Date Line - Wikipedia

    en.wikipedia.org/wiki/International_Date_Line

    The International Date Line (IDL) is the line extending between the South and North Poles that is the boundary between one calendar day and the next. It passes through the Pacific Ocean , roughly following the 180.0° line of longitude and deviating to pass around some territories and island groups.

  7. Daily Briefing: Countdown to midnight - AOL

    www.aol.com/countdown-midnight-110726687.html

    Photo of the day: 'My favorite rule in football' Jim Harbaugh got an opportunity to utilize what he called his favorite rule in football: The fair-catch kick.

  8. The Doomsday Clock Just Moved Closer to Midnight - AOL

    www.aol.com/doomsday-clock-just-moved-closer...

    T oday, the Doomsday Clock was set to 89 seconds to midnight, the closest to midnight ever in its 78-year history. It’s the duty of the United States, China, and Russia to lead the world back ...

  9. Day - Wikipedia

    en.wikipedia.org/wiki/Day

    A day is the time period of a full ... [23] ancient Chinese [24] and in modern times is for the civil day to begin at midnight, i.e ... i.e. 00:00 of the next day.