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Show HN: TogetherMoon – Share the night sky with someone miles away

https://togethermoon.com/?go=2RG6Q
1•punyname•11h ago
Ever been on a call with someone across the world and wished you could share a moment looking at the same physical thing? The Moon is the only object both of you can actually see together.

This tool uses real astronomical calculations to tell you when you and someone in another city can both see the Moon at the same moment. Perfect for long-distance relationships, late-night calls with friends abroad, or staying connected with family across time zones.

Try it now - London and Paris can both see the Moon tonight. Or test with any two cities worldwide. All calculations happen in your browser, so your shared moments stay private.

Link: https://togethermoon.com

The London Tube 'Feels Like Hell.' Efforts to Cool It Just Make It Hotter

https://www.wsj.com/world/the-london-tube-feels-like-hell-efforts-to-cool-it-just-make-it-hotter-35b7a94a
1•impish9208•1m ago•1 comments

Review: School

https://www.astralcodexten.com/p/your-review-school
1•eamag•4m ago•0 comments

Show HN: I Made a Simple Tool to Get English IPA Pronunciation Fast

https://phonetic-spelling.com
1•combineimages•4m ago•0 comments

Precisely Tracking Stealth Fighters Using Cheap Cameras Without AI [video]

https://www.youtube.com/watch?v=zFiubdrJqqI
1•chabad360•5m ago•0 comments

Advanced JIT Compilers for Ruby: TruffleRuby and JRuby

https://blog.appsignal.com/2025/07/16/advanced-jit-compilers-for-ruby-truffleruby-and-jruby.html
1•amalinovic•7m ago•0 comments

Co-op (UK) boss confirms all 6.5M members had data stolen

https://www.bbc.co.uk/news/articles/cql0ple066po
2•mmarian•10m ago•0 comments

Im looking to speak with non-technical founders

1•alexnikityuk•11m ago•0 comments

Learning Founder Led Sales

1•projectrevenue•12m ago•0 comments

An Autistic "Linguatype"? Neologisms, New Words, and New Insights

https://onlinelibrary.wiley.com/doi/10.1002/aur.70080
1•bryanrasmussen•15m ago•0 comments

Slower, More Painful, Tortuous Vehicular Homicide

https://medium.com/luminasticity/slower-more-painful-tortuous-vehicular-homicide-e6b94bf6881a
1•bryanrasmussen•17m ago•0 comments

Free Blur Image Online – Easily Blur Your Photos

https://www.blurimageonline.com/
1•sdaglui•17m ago•1 comments

EsProc SPL:Equivalent to the Python Enhanced DuckDB

https://github.com/SPLWare/esProc/wiki/esProc-SPL%EF%BC%9AEquivalent-to-the-Python-enhanced-DuckDB
1•ossdwa•20m ago•0 comments

AI That Thinks Offline, Skia Animations, and a Glimpse of the Future

https://thereactnativerewind.com/issues-blog-post/ai-that-thinks-offline-skia-animations-and-a-glimpse-of-the-future
1•lukebrandon•21m ago•1 comments

AWS open-sourced Postgres active-active replication extension

https://github.com/aws/pgactive
2•ForHackernews•22m ago•0 comments

The logarithmic memristor-based Bayesian machine

https://www.nature.com/articles/s44172-025-00360-2
1•bryanrasmussen•24m ago•0 comments

Nvidia Parakeet

https://huggingface.co/nvidia/parakeet-tdt-0.6b-v2
1•tosh•25m ago•0 comments

ICE may deport to 'third countries' without assurances they won't be tortured

https://www.nbcnews.com/news/us-news/ice-deport-migrants-third-countries-assurances-wont-tortured-memo-rcna218990
2•perihelions•26m ago•0 comments

Recommend interesting free online books on C programming

1•FerkiHN•26m ago•1 comments

AI-powered LeetCode assistant Chrome extension (seeking beta testers)

https://chromewebstore.google.com/detail/immersive-practice-for-in/egamcpbkcbgkchogbcjmhcnfmjjhaiod
1•Rocke1001feller•28m ago•1 comments

Imagine humans checking AI didn't make a mistake – forever

https://www.theregister.com/2025/07/16/if_you_want_a_picture/
1•jjgreen•32m ago•0 comments

A pretty and easy way to share Markdown files. No ads. Free forever

https://showit.online
1•amiune•35m ago•0 comments

Ploi Cloud

https://ploi.cloud
2•esher•38m ago•0 comments

XAI's Grok 4 has no meaningful safety guardrails

https://www.lesswrong.com/posts/dqd54wpEfjKJsJBk6/xai-s-grok-4-has-no-meaningful-safety-guardrails
3•mellosouls•40m ago•0 comments

Practically-a-Book Review: Byrnes on Trance

https://www.astralcodexten.com/p/practically-a-book-review-byrnes
1•eamag•41m ago•0 comments

What browser fingerprinting tests like Amiunique show, and what they miss

https://blog.castle.io/what-browser-fingerprinting-tests-like-amiunique-and-browserleaks-really-show-and-what-they-miss/
1•avastel•42m ago•0 comments

Show HN: Seal.codes – Verify content authenticity right in the browser

https://seal.codes
2•utsavanand2•42m ago•1 comments

London Hydraulic Power Company

https://en.wikipedia.org/wiki/London_Hydraulic_Power_Company
2•helsinkiandrew•43m ago•0 comments

R2 – Service Level Agreement

https://www.cloudflare.com/r2-service-level-agreement/
1•Bluestein•46m ago•0 comments

Proof by Intimidation

https://en.wikipedia.org/wiki/Proof_by_intimidation
2•ipnon•47m ago•1 comments

VetDoze| Accurate doses, Clean records, Healthy veterinary patients

https://www.vetdoze.com
1•Sinaghodsi93•48m ago•0 comments