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January 1, 1970

Discussion in 'Software, Computers, CMC's Techie Stuff' started by Framar, Mar 29, 2018.

  1. Framar

    Framar SPFG, Supreme Picture Framing God

    Every time I have to reboot or change the battery on loathsome hand-me-down iPhone 4S - which I only use for taking photos and making movies - it always reverts to the above date.

    Where did they come up with that? I thought it might have been Steve Jobs' birthday but he was born in 1955.

    It also defaults to Cupertino, California as the location so my time is always 3 hours off.

    What a PITA.
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  2. Larry Peterson

    Larry Peterson PFG, Picture Framing God

    1/1/1970 is the base date for almost all computer systems.

    Per WikiTalksTooMuch:

    Unix time (also known as POSIX time[citation needed] or UNIX Epoch time[1]) is a system for describing a point in time, defined as the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970,[2] minus the number of leap seconds that have taken place since then.[2][3] It is used widely in Unix-like and many other operating systems and file formats.

    And it will be responsible for the 2038 problem for those of us still kicking then.

    On systems where the representation of Unix time is as a signed 32-bit number, the representation will end after the completion of 2,147,483,647 (231 - 1) seconds from 00:00:00 on 1 January 1970 minus the number of leap seconds that have taken place since then, which will happen on 19 January, 2038 03:14:08 UTC. This is referred to as the "Year 2038 problem" where the 32-bit signed Unix time will overflow and will take the actual count to negative.

    It's a problem that may make the Y2K issues seem small.

    For those who may give a hoot about Y2038, here is some more from WikiWhatever: https://en.wikipedia.org/wiki/Year_2038_problem
    neilframer, David Waldmann and Framar like this.
  3. Framar

    Framar SPFG, Supreme Picture Framing God

    Well, if I am alive by then I'll be 92 in 2038, so I probably won't care too much. ;)

    Thanks for the answer - that has been bugging me for a while.
    neilframer likes this.
  4. Grey Owl

    Grey Owl SGF, Supreme Grumble Framer

    If I'm alive on Jan 1, 2038, I will be 94, and probably recovering from a hangover!
    neilframer and Framar like this.
  5. neilframer

    neilframer PFG, Picture Framing God

    Uh, oh...
    Now you've done it....:p
  6. Larry Peterson

    Larry Peterson PFG, Picture Framing God

    In 2038, I'll be in a new sleeve (shameless Altered Carbon reference) so I'll be good to go.
    Grey Owl likes this.
  7. prospero

    prospero SPFG, Supreme Picture Framing God

    Computery things have absolutely no common sense. :confused: They do exactly what you tell them and if you
    tell them rubbish they will do likewise.

    I heard of a lady who got a letter, addressed to her parents, all about her starting school.
    She was 104 years old. :D

    Not difficult to work out what happened. I think she was born in 1890something. The database obviously
    didn't have the 18 on it.
  8. David Waldmann

    David Waldmann SGF, Supreme Grumble Framer

    Rather amazing they had her parents' names... or maybe it was addressed "To the Parents of:"

  9. Peter Odems

    Peter Odems SPFG, Supreme Picture Framing God

    So you use that old iPhone just as a camera and it is never connected to any network or internet, only to your PC with a cable? That is smart using! But the system-software can become a bot confused as I think. Perhaps you better switch that device at "Airplane mode" so it will continue to work without searching for networks.

    When your battery is very old as well, that can cause strange problems like you see now. But as I remember well, you already replaces the battery by yourself as I saw in an older topic. Keep that battery charged higher as 15% to avoid these strange happenings.
  10. Framar

    Framar SPFG, Supreme Picture Framing God

    I keep it in airplane mode all the time (except when I have to update the time). And the battery had to be charged to over 99% or it won't work at all (freezes, shuts down, won't shut down, does strange things like vibrating).

    But when it is working it is a peach!
  11. Peter Odems

    Peter Odems SPFG, Supreme Picture Framing God

    And no 3th party apps still loaded?
  12. Framar

    Framar SPFG, Supreme Picture Framing God

    When I got it its history had been professionally wiped (the guy who owned it was head of IT for the WWE) and I have never connected it to any service - so, no, no apps whatsoever.

    I did try to connect to the apple store to take a look see when I first got it but it refused to accept my laboriously earned password and ID. You know, one of those things with five questions about your childhood toys, pets, and teachers and then when I tried to sign in it asked me what my favorite color was. A little too Pythonesque for me.
  13. Peter Odems

    Peter Odems SPFG, Supreme Picture Framing God

    I think you don't need that all for using it as your camera. Go to your system preferences and have a look what activity is taking most energy.

    System Settings/Pref's--->Battery--->and look at the bottom that the only app that uses energy is your camera, beside the system-apps. If other apps are also listed, be sure to switch those "off" to be sure that they have no influence at your system.

    The camera is also (normally) using external data to connect your position to the shots. You have to shut this down as well because you can never use mobile-data for that. Is wifi also turned "off"?
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