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.]

  • steventhedev@lemmy.worldEnglish
    281·
    11 months ago

    Here’s the shortlist of horrors I’ve had to deal with in my career:

    • Mixed US/ROW short date formats - DD/MM/YY, MM/DD/YY
    • mixed timezones in the same column
    • the wrong timezone (marked as PDT but actually UTC, or sometimes the other way around)
    • clock drift
    • timezones again…because timezones suck
    • historical timezones
    • NTP configurations

    Things I’ve read about but haven’t needed to deal with personally:

    • leap seconds
    • clock slew vs skip
    • hardware clocks
    • PTP

    The one thing I really don’t care about is relativity