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  2. Doomsday Clock - Wikipedia

    en.wikipedia.org/wiki/Doomsday_Clock

    The Clock was moved to 150 seconds (2 minutes, 30 seconds) in 2017, then forward to 2 minutes to midnight in 2018, and left unchanged in 2019. [6] It was moved forward to 100 seconds (1 minute, 40 seconds) in 2020, [7] 90 seconds (1 minute, 30 seconds) in 2023, [8] and 89 seconds (1 minute, 29 seconds) in 2025. [9]

  3. Leap second - Wikipedia

    en.wikipedia.org/wiki/Leap_second

    Screenshot of the UTC clock from time.gov during the leap second on 31 December 2016.. A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC), to accommodate the difference between precise time (International Atomic Time (TAI), as measured by atomic clocks) and imprecise observed solar time (), which varies due to irregularities and long-term ...

  4. Sidereal time - Wikipedia

    en.wikipedia.org/wiki/Sidereal_time

    (In the context of sidereal time, "March equinox" or "equinox" or "first point of Aries" is currently a direction, from the center of the Earth along the line formed by the intersection of the Earth's equator and the Earth's orbit around the Sun, toward the constellation Pisces; during ancient times it was toward the constellation Aries.) [2 ...

  5. Doomsday Clock ticks one second closer to midnight - and ...

    www.aol.com/doomsday-clock-ticks-one-second...

    The clock now stands at 89 seconds. For the last two years, it has been at 90 seconds – itself already closer than ever before. The Doomsday Clock was begun in 1947, as a metaphor for the danger ...

  6. Real-time clock - Wikipedia

    en.wikipedia.org/wiki/Real-time_clock

    A real-time clock (RTC) is an electronic device (most often in the form of an integrated circuit) that measures the passage of time. Although the term often refers to the devices in personal computers , servers and embedded systems , RTCs are present in almost any electronic device which needs to keep accurate time of day .

  7. This Alarm Clock Shows You the Date, Time and ... - AOL

    www.aol.com/entertainment/alarm-clock-shows-date...

    Plus, this device comes with a USB charging port, as well as a temperature and date display! This top-rated alarm clock from Walmart is currently on sale, and it’s seriously a steal. For only ...

  8. International Atomic Time - Wikipedia

    en.wikipedia.org/wiki/International_Atomic_Time

    Due to the signal averaging TAI is an order of magnitude more stable than its best constituent clock. The participating institutions each broadcast, in real time, a frequency signal with timecodes, which is their estimate of TAI. Time codes are usually published in the form of UTC, which differs from TAI by a well-known integer number of seconds.

  9. Terrestrial Time - Wikipedia

    en.wikipedia.org/wiki/Terrestrial_Time

    The atomic time scale A1 (a predecessor of TAI) was set equal to UT2 at its conventional starting date of 1 January 1958, [8] when ΔT (ET − UT) was about 32 seconds. The offset 32.184 seconds was the 1976 estimate of the difference between Ephemeris Time (ET) and TAI, "to provide continuity with the current values and practice in the use of ...

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