this post was submitted on 14 Dec 2023
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xkcd

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https://xkcd.com/2867

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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.]

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[–] chuck@lemmy.ca 49 points 1 year ago (10 children)

Ah I've gotten to the point where I have to define what "frame" and epoch each time base is in before I'll touch the representation of time( Unix,Gregorian, etc) .To be honest I'm probably just scratching the surface of time problem.

Hell probably the reason we haven't seen time travellers is we suck at tracking time and you probably need to accurately know your time and place to a very good precision to travel to a given point and we can't say where and when that is with enough accuracy to facilitate where to land. And people don't want to land in the earth's surface or 10000 km away from a stable orbit. Maybe some writer can build that out for a time travel book or to discount it for some reason lol

[–] kurwa 19 points 1 year ago (7 children)

I recall a short story like that where someone died because they time traveled, but didn't account for position.

[–] 2deck 15 points 1 year ago (3 children)
[–] cheet@infosec.pub 4 points 1 year ago

Holy crap I wasn't ready for that. Great rec tho

[–] peyotecosmico@programming.dev 4 points 1 year ago

Really good, thanks

[–] CosmicCleric 1 points 1 year ago* (last edited 1 year ago) (1 children)

SPOILERI want little Emily to change her future. A sequel is needed!

--

(Thanks for sharing, was a good watch.)

[–] 2deck 2 points 1 year ago (1 children)

There are... 2 sequels

Good luck finding them though!

[–] sukhmel@programming.dev 3 points 1 year ago (1 children)

There's link in the description, it's just that those are a bit costy ($8 just to watch on Vimeo)

[–] CosmicCleric 2 points 1 year ago

There’s link in the description, it’s just that those are a bit costy ($8 just to watch on Vimeo

Ouch. Yeah, I don't want to know that badly.

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