https://xkcd.com/2867

Alt text:

It’s not just time zones and leap seconds. SI seconds on Earth are slower because of relativity, so there are time standards for space stuff (TCB, TGC) that use faster SI seconds than UTC/Unix time. T2 - T1 = [God doesn’t know and the Devil isn’t telling.]

  • Cosmonaut_Collin
    link
    fedilink
    English
    4910 months ago

    This is why we should just move to a universal time zone and stop with the day light savings.

      • @[email protected]
        link
        fedilink
        English
        1910 months ago

        If your system hasn’t been upgraded to 64-bit types by 2038, you’d deserve your overflow bug

        • @[email protected]
          link
          fedilink
          English
          810 months ago

          Let’s just nake it 128-Bit so it’s not our problem anymore.
          Hell, let’s make it 256-Bit because it sounds like AES256

          • @[email protected]
            link
            fedilink
            English
            16
            edit-2
            10 months ago

            64 bits is already enough not to overflow for 292 billion years. That’s 21 times longer than the estimated age of the universe.

            • @nybble41
              link
              English
              1310 months ago

              If you want one-second resolution, sure. If you want nanoseconds a 64-bit signed integer only gets you 292 years. With 128-bit integers you can get a range of over 5 billion years at zeptosecond (10^-21 second) resolution, which should be good enough for anyone. Because who doesn’t need to precisely distinguish times one zeptosecond apart five billion years from now‽

              • @[email protected]
                link
                fedilink
                English
                2
                edit-2
                10 months ago

                If you run a realistic physical simulation of a star, and you include every subatomic particle in it, you’re going to have to use very small time increments. Computers can’t handle anywhere near that many particles yet, but mark my words, physicists of the future are going want to run this simulation as soon as we have the computer to do it. Also, the simulation should predict events billions of years in the future, so you may need to build a new time tracking system to handle that.

                • @nybble41
                  link
                  English
                  610 months ago

                  Good point. You’d need at least 215 bits to represent all measurably distinct times (in multiples of the Planck time, approximately 10^-43 seconds) out to the projected heat death of the universe at 100 trillion (10^14) years. That should be sufficient for even the most detailed and lengthy simulation.

            • @[email protected]
              link
              fedilink
              English
              7
              edit-2
              10 months ago

              With a 128 bit integer you can represent 340 undecillion (or sextillion if you use the long scale notation) seconds, which is equivalent to 10 nonillion (or quintillion, long scale) years. The universe will long have have stopped being able to support life by then because stars stopped forming (enough time would have passed it could have happened a hundred quadrillion (a hundred thousand billion, long form) times over assuming we start counting from the birth of the universe).

    • @[email protected]
      link
      fedilink
      English
      410 months ago

      Swatch’s Internet Beats are making more and sense every time Daylight Savings forces a timezones change. Why are we still using base 12 for time anyway?