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We built another object storage

https://fractalbits.com/blog/why-we-built-another-object-storage/
60•fractalbits•2h ago•9 comments

Java FFM zero-copy transport using io_uring

https://www.mvp.express/
25•mands•5d ago•6 comments

How exchanges turn order books into distributed logs

https://quant.engineering/exchange-order-book-distributed-logs.html
49•rundef•5d ago•17 comments

macOS 26.2 enables fast AI clusters with RDMA over Thunderbolt

https://developer.apple.com/documentation/macos-release-notes/macos-26_2-release-notes#RDMA-over-...
467•guiand•18h ago•237 comments

AI is bringing old nuclear plants out of retirement

https://www.wbur.org/hereandnow/2025/12/09/nuclear-power-ai
33•geox•1h ago•25 comments

Sick of smart TVs? Here are your best options

https://arstechnica.com/gadgets/2025/12/the-ars-technica-guide-to-dumb-tvs/
433•fleahunter•1d ago•362 comments

Photographer built a medium-format rangefinder, and so can you

https://petapixel.com/2025/12/06/this-photographer-built-an-awesome-medium-format-rangefinder-and...
78•shinryuu•6d ago•9 comments

Apple has locked my Apple ID, and I have no recourse. A plea for help

https://hey.paris/posts/appleid/
865•parisidau•10h ago•445 comments

GNU Unifont

https://unifoundry.com/unifont/index.html
287•remywang•18h ago•68 comments

A 'toaster with a lens': The story behind the first handheld digital camera

https://www.bbc.com/future/article/20251205-how-the-handheld-digital-camera-was-born
42•selvan•5d ago•18 comments

Beautiful Abelian Sandpiles

https://eavan.blog/posts/beautiful-sandpiles.html
83•eavan0•3d ago•16 comments

Rats Play DOOM

https://ratsplaydoom.com/
332•ano-ther•18h ago•123 comments

Show HN: Tiny VM sandbox in C with apps in Rust, C and Zig

https://github.com/ringtailsoftware/uvm32
167•trj•17h ago•11 comments

OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI

https://simonwillison.net/2025/Dec/12/openai-skills/
481•simonw•15h ago•271 comments

Computer Animator and Amiga fanatic Dick Van Dyke turns 100

109•ggm•6h ago•23 comments

Will West Coast Jazz Get Some Respect?

https://www.honest-broker.com/p/will-west-coast-jazz-finally-get
10•paulpauper•6d ago•2 comments

Formula One Handovers and Handovers From Surgery to Intensive Care (2008) [pdf]

https://gwern.net/doc/technology/2008-sower.pdf
82•bookofjoe•6d ago•33 comments

Show HN: I made a spreadsheet where formulas also update backwards

https://victorpoughon.github.io/bidicalc/
179•fouronnes3•1d ago•85 comments

Freeing a Xiaomi humidifier from the cloud

https://0l.de/blog/2025/11/xiaomi-humidifier/
126•stv0g•1d ago•51 comments

Obscuring P2P Nodes with Dandelion

https://www.johndcook.com/blog/2025/12/08/dandelion/
57•ColinWright•4d ago•1 comments

Go is portable, until it isn't

https://simpleobservability.com/blog/go-portable-until-isnt
119•khazit•6d ago•101 comments

Ensuring a National Policy Framework for Artificial Intelligence

https://www.whitehouse.gov/presidential-actions/2025/12/eliminating-state-law-obstruction-of-nati...
169•andsoitis•1d ago•217 comments

Poor Johnny still won't encrypt

https://bfswa.substack.com/p/poor-johnny-still-wont-encrypt
52•zdw•10h ago•64 comments

YouTube's CEO limits his kids' social media use – other tech bosses do the same

https://www.cnbc.com/2025/12/13/youtubes-ceo-is-latest-tech-boss-limiting-his-kids-social-media-u...
84•pseudolus•3h ago•67 comments

Slax: Live Pocket Linux

https://www.slax.org/
41•Ulf950•5d ago•5 comments

50 years of proof assistants

https://lawrencecpaulson.github.io//2025/12/05/History_of_Proof_Assistants.html
107•baruchel•15h ago•17 comments

Gild Just One Lily

https://www.smashingmagazine.com/2025/04/gild-just-one-lily/
29•serialx•5d ago•5 comments

Capsudo: Rethinking sudo with object capabilities

https://ariadne.space/2025/12/12/rethinking-sudo-with-object-capabilities.html
75•fanf2•17h ago•44 comments

Google removes Sci-Hub domains from U.S. search results due to dated court order

https://torrentfreak.com/google-removes-sci-hub-domains-from-u-s-search-results-due-to-dated-cour...
193•t-3•11h ago•34 comments

String theory inspires a brilliant, baffling new math proof

https://www.quantamagazine.org/string-theory-inspires-a-brilliant-baffling-new-math-proof-20251212/
167•ArmageddonIt•22h ago•154 comments
Open in hackernews

TimeGuessr

https://timeguessr.com/
328•stefanpie•6mo ago

Comments

mmahemoff•6mo ago
This is fun! I didn't immediately notice the time slider and thought it was just GeoGuessr with historical pictures, but the time element adds a whole new dimension.
xeonmc•6mo ago
Should probably be renamed to “Spacetime Guesser”
fcatalan•6mo ago
I do the timeguessr daily every day almost as a ritual, it's fun, satisfying and educative.

It's also very interesting to watch people try after you've done it: how they catch on stuff you missed, their strategies to find and date things, or how they infuriatingly ignore whatever was the giveaway to you.

justbeingbored•6mo ago
Just played 5 rounds. I wanted to see my score as ranked against others, but u didn't do that. That's like me saying here is 800 points for your post. There is no context for the score.
gblargg•6mo ago
Does it at least tell you how close you were for each one? (feedback so you can improve)
fcatalan•6mo ago
Yes there's a feedback page for each round explaining the pic and showing the location, also a breakdown page after every 5 round match.
fcatalan•6mo ago
Yes, score rankings are missing. There's a leaderboard for the daily, but only shows accounts you have friended.

For reference, I tend to hover around 44k for the daily. 48k is a lucky/easy day, 40k some disaster happened. Under 40 is very rare. I like to think that would be above average, but without rankings I don't know :)

xboxnolifes•6mo ago
The context is how close you were to the correct answer, not to your peers.
jen729w•6mo ago
I got ~28,000.
cellis•6mo ago
indeed, this is screaming for a leaderboard and eventual Geoguesser. Sadly I do believe the reasoning models can one shot this? Maybe would take away all the fun
me_bx•6mo ago
The game 'Whentaken' [1] follows the exact same concept.

Just mentioning in case people are interested in alternatives / slightly different UX.

[1]: https://whentaken.com/

JimDabell•6mo ago
Also whichyr: https://whichyr.com

Discussed here: https://news.ycombinator.com/item?id=43715024

motoxpro•6mo ago
whichyr is awesome. I feel terrible about myself that I am systematically below average.
eastbound•6mo ago
I find the UX of Whichyr much better, but it doesn’t have the geographical component. But you see your final ranking on a gaussian curve and it’s fun!

https://whichyr.com/

And here are other games in that style of 5-minutes cultural guesses:

https://framed.wtf/

https://gaps.wtf/

https://sutom.nocle.fr/

https://globle.org/?

https://worldlegame.io/?

https://flagle.gg/

https://phrazle.gg/

https://numberle.org/

Not working currently but guess a historical moment: https://www.historle.com/?#

Guess a wikipedia page: https://pedantle.certitudes.org

tasuki•6mo ago
I'm at 200 tries for the "Guess a wikipedia page" thing, completely exhausted, and not getting anywhere. Very frustrating, yet I can't bring myself to abandon it...
mkl•6mo ago
Took me 115. I guessed lots of general filler words to work out the structure of some sentences, and guessed lots of general subject words to find a few hits. The grey words that it fills in when they're related can be a bit misleading. I didn't get a single sentence complete before guessing the article.
tesuto•6mo ago
Out of curiosity, I wonder why the game chose Apple Maps. I would have expected OpenStreetMap. Interesting choice.
mocmoc•6mo ago
love it
stephenhandley•6mo ago
Super fun! Would be cool to be able to challenge someone after going through a round. Also maybe clear CTA after round on way to sign up to save your score.
ukprogrammer•6mo ago
Great idea! What's the tech stack?
alexkearns•6mo ago
Not quite the same but we created a timeline ordering game for US presidents: https://www.tiki-toki.com/timeline/entry/1842261/US-Presiden...

You can also use our app to create timeline ordering games on subjects of your own choosing.

nokita•6mo ago
Irretrievably hung my phone requiring a hard reset.

Using Chrome on vanilla Android on Samsung.

mh-•6mo ago
Seems like an issue with the OS? Surely a web page in a userland app like Chrome shouldn't be able to do that..
brahma-dev•6mo ago
This is how it renders for me. https://imgur.com/a/kJmNMUR
pastage•6mo ago
Some photos are off by at least 100 meters and it is surprising how easy a photo can be off a year so easily. I believe it happens because the easy timestamp is at the time of development, means you can easily be two years off. Also surprising how easy it is to get exact date and time of day on some of the photos.
phgn•6mo ago
Why do I have to pick both a location AND year? Why not focus this game on the year only?
cheschire•6mo ago
You’ll probably enjoy this game then

https://whichyr.com/

tasuki•6mo ago
All the pictures I got were from the US. That makes me happy with my 3955 (Top 31%) score, though I'd have appreciated more geographical variety.
pngeez•5mo ago
Creator here, sorry about that! Most days have more geographic diversity, and I'm working on improving it.
kaishiro•6mo ago
That's like asking why a weather app needs both a date and city - the temperature on July 4th matters, but it's completely different in New York vs. Cairo. Same with this - the year sets the global context, but the location defines the local experience.
cosmodev•6mo ago
I just clicked to take a quick look, and suddenly found myself playing it's a simple but surprisingly enjoyable game
rossant•6mo ago
Nice. Got 30,527.
junon•6mo ago
30,592/50,000 is higher than I thought I'd get. This is fun!

One of the photos was someone holding a phone with Timeguessr on it. Still managed to get the date wrong - it was taken in 2024.

eej71•6mo ago
I got lucky - I got the Hagia Sophia twice.
captn3m0•6mo ago
I couldn’t figure out how the time picker worked (and that there was a time picker) till the third round when I realised I was being penalized. Got 34k still.
trebligdivad•6mo ago
I'm glad you figured it out...I don't see a map to put a pin into.
Humphrey•6mo ago
This is fun! While some are obvious, and some you need to "cheat" by Googling - it's really fun looking at a part of the world you wouldn't normally browse a map of.
whamlastxmas•6mo ago
Very fun!
golfer•6mo ago
Cute game! Needs an easy way to maximize the picture so you can see it full screen (on laptop).
Jordan-117•6mo ago
Love their selection of photos more than the competition -- more likely to contain giveaways like a famous location from an unusual angle or a subtle date, so it feels more like detective work than guesswork. Just wish it reset at midnight local.
king_phil•6mo ago
Did not work too well for me on mobile. One time it did not scroll but went back, one time controls were missing
mh-•6mo ago
I didn't try the web based one, but the mobile app works great.
setsewerd•6mo ago
Yeah I had issues with the mobile web version as well. Worked for 4 rounds but then the time selector stopped moving when I tried to select, and the map stopped loading detail when zooming in (and wouldn't let me place a pin). Started over and the same thing happened in the 3rd round.

Still a great little game though

sundarurfriend•6mo ago
Scrolling with the mouse on the image (no Ctrl or anything, just scroll) zooms into the section of the image you're on, for anyone else trying "Open image in new tab" or other ways to zoom in.

I'm a big GeoGuessr fan, and had heard of TimeGuessr occasionally in those circles. I'd assumed it would be mostly pictures from the USA and so wasn't massively interested, and from trying it out now, I wasn't too far off: most of the images were from the US and Western Europe, and every single picture so far has been from a rich country. There are obvious reasons for that, and it's not a bad thing in some absolute terms, but it makes it kinda boring for me - the big appeal of GeoGuessr for me is that you routinely get dropped off in a country that you don't often think of, and momentarily get to see and imagine life through their eyes.

Maybe over time, TimeGuessr will also accumulate images from more varied places - or maybe one of the alternatives mentioned in this thread (whentaken and whichyr) already do better in that regard?

InitialLastName•6mo ago
I don't know, my pictures definitely biased towards "cameras are accessible in these places" but I had modern Nepal and Bangladesh, as well as 1930's Finland.
NooneAtAll3•6mo ago
> Scrolling with the mouse

once again nobody cares about laptop users :/

baw-bag•6mo ago
It's not that. They changed recently to 100% zoom. It used to be much more fine. Zoom in a little, Zoom out a little. For the past week, it's been max zoom in either direction. Kinda annoying.
sundarurfriend•6mo ago
I myself am on a laptop actually :D but with a bluetooth mouse connected.

Does yours not have two-finger drag on the touchpad be equivalent to a scroll? That also seems to work on this website, although of course it's a bit more inconvenient than using an actual mouse.

baw-bag•6mo ago
Its not true!

I have been playing TimeGuessr for 11 months, I do it before bed.

I have been all over, I personally really struggle between Vietnam and Thailand and got even that wrong with Cambodia. I am simply ignorant but it's not just rich countries.

sundarurfriend•6mo ago
That's good to know. I just tried another game, and got: Belgium, Denmark, USA, UK, USA. Not exactly the variety I'd hoped for! But I'll try it out occasionally and see if I ever get lucky with an interesting round.
fnky•5mo ago
First game, the places I got was:

- Argentina - Belarus – I guessed Poland, because the picture dipicted Polish soliders right after WII - Poland - France - Finland

pmxi•6mo ago
This is really cool.

However, my first photo said "Times Square, NY" in the corner, with a copyright for 1908 which gave it all away.

SamBam•6mo ago
Fun! I was surprised how often I was 1 year off and in the right city for things that I was just guessing about.

On small error I found: there's a photo that's outside Piazza Navona in Rome in the 30s, which it lists as being 700 meters away at Piazza Venezia. I know I'm correct -- I lived a street away from there.

hdjrudni•6mo ago
Maybe it moved 700m since the 30s? =)
Arech•6mo ago
I absolutely love 3 dimensional nature of the game and how carefully many images are chosen to allow for a precise spacetime localization with a bit of a research. Super enjoyable experience in startling contrast with geogessr, which I don't even want to open. Thanks a ton!
osigurdson•6mo ago
It should be called "locationguessr" imo since that is what you are guessing.
diego_moita•6mo ago
There's an year slider on the bottom right. You're supposed to guess the year too.
gandalfgreybeer•6mo ago
Just in case you enjoyed this, and based on you using “locationguessr”, I’d recommend looking up Geoguessr :)
nisse72•6mo ago
I guessed 2021 for one photo which turned out to be Joe Biden's inauguration fireworks. It tells me I was 20 years off?
elwell•6mo ago
That was really fun; I was pleasantly surprised with 43,165. Trusting intuition worked well.
wdutch•6mo ago
Oh nicely done! There was me thinking I'd done well with 38,332 / 50,000. It'd be nice if the site itself showed how well you did relative to others but I can't see anything like that, maybe I'm missing it.
INTPenis•6mo ago
It wasn't really clear to me that you had to select the year as well as location. Because the year was already written in a red box, so I never tried to change it.
oofnik•6mo ago
41,481. Nice. That was a fun time waster.
breakyerself•6mo ago
There was a chalkboard menu in the picture with the date on it, but it said I was 50 years off. Meta data isn't always reliable.