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Show HN: Time Keep – Location timezones, timers, alarms, countdowns in one place

2•jmbuilds•2h ago
I kept running into this: timer on my laptop, alarm on my phone, timezone / discord timestamp conversion app in a separate tab. Switching between them was a hassle and I wanted to be able to set them up and manage really fast anywhere I was.

So I built Time Keep, it puts world clocks, timers, alarms, countdowns, a stopwatch, breaks, a sleep planner, Discord timestamps, and more into one always open place.

Works without an account or signup. All tools are fully functional immediately. Sign in to save your data across sessions. Pro adds live cross-device sync.

Shared countdown links show the correct time in every viewer's timezone. Built with Next.js, Supabase, Clerk, and Vercel.

https://www.timekeep.cc

I Spoke to AI Agent Claude – Sen Bernie Sanders

https://www.youtube.com/watch?v=h3AtWdeu_G0
1•timetraveller26•1m ago•0 comments

ShouldIBuildThat finds app opportunities that appear across multiple signals

https://www.shouldibuildthat.com/
1•da352•1m ago•0 comments

Building a UI Framework [pdf]

https://software.hixie.ch/ui-frameworks.pdf
1•jarek-foksa•4m ago•0 comments

IdeaClaw – one sentence, get a camera-ready paper, BP, DD reports, health report

https://github.com/StartripAI/ideaClaw
1•AlfredHua1•5m ago•0 comments

What's in a name? – The unknown faces of history

https://www.uni-bonn.de/en/news/048-2026
1•hhs•5m ago•0 comments

Making an Argument for (Voluntary) Online Identity Verification

https://agoraid.com/blog/supporting-online-identity-verification/
1•kisamoto•7m ago•0 comments

To Catholic thinkers, Pentagon's AI demands violate 'human dignity'

https://www.washingtonpost.com/nation/2026/03/19/anthropic-war-ai-catholic-church/
1•reaperducer•9m ago•0 comments

I built a database scoring what separates high-scoring pitch decks from the rest

https://www.unbiasedventures.ch/pitch-deck-examples-2026/
1•peterweisz•9m ago•0 comments

House speaker, Intel chiefs make new push to renew surveillance law

https://www.reuters.com/legal/government/republican-speaker-intel-chiefs-make-new-push-renew-surv...
3•petethomas•10m ago•0 comments

Replacing Anki: what I learned building a language app (1k users, $21 MRR)

https://www.indiehackers.com/post/i-built-a-language-learning-app-to-replace-anki-1-000-users-21-...
1•vital_pavlenko•12m ago•0 comments

Agent-rendered: the pattern that replaces runtime infra with build-time AI

https://gumeo.github.io/post/agent-rendered-infrastructure/
1•gumeo•14m ago•0 comments

Vulnerabilities in OpenClaw: A Complete Enterprise Security Analysis

https://ClawNanny.com/docs_viewer?markdown_url=/static/docs/ClawNanny_OpenClaw_Enterprise_Securit...
1•OpenSystemApps•16m ago•0 comments

Minecraft Source Code Is Interesting

https://www.karanjanthe.me/posts/minecraft-source/
2•KMJ-007•16m ago•0 comments

AI Pentester

https://www.noscope.com/
1•realtryhackme•16m ago•0 comments

Update iOS to protect your iPhone from web attacks

https://support.apple.com/en-us/126776
1•tech234a•17m ago•0 comments

New "PolyShell" flaw allows unauthenticated RCE on Magento e-stores

https://www.bleepingcomputer.com/news/security/new-polyshell-flaw-allows-unauthenticated-rce-on-m...
1•uyzstvqs•17m ago•0 comments

Generalized Dot-Product Attention: Tackling Real-World Challenges in GPU Kernels

https://pytorch.org/blog/generalized-dot-product-attention-tackling-real-world-challenges-in-gpu-...
1•matt_d•18m ago•0 comments

Delve (YC W24) – Fake Compliance as a Service – Part I

https://deepdelver.substack.com/p/delve-fake-compliance-as-a-service
2•sebmellen•19m ago•0 comments

M^2RNN: Non-Linear RNNs with Matrix-Valued States for Scalable Language Modeling

https://arxiv.org/abs/2603.14360
1•matt_d•19m ago•0 comments

COW Fork: Zero-Copy Sandbox Cloning for AI Agents

https://multikernel.io/2026/03/19/sandlock-cow-fork/
1•wang_cong•20m ago•0 comments

Netcup Increases Prices over 21%

https://www.netcup.com/en/priceadjustment
1•gethly•21m ago•0 comments

Location of French aircraft carrier leaked in real time via Strava user on board

https://www.lemonde.fr/international/article/2026/03/19/stravaleaks-le-porte-avions-charles-de-ga...
1•asp1•22m ago•0 comments

360B tokens, 3M customers, 6 engineers

https://vercel.com/blog/360-billion-tokens-3-million-customers-6-engineers
1•gmays•27m ago•0 comments

Beat Paxos

http://muratbuffalo.blogspot.com/2026/03/break-paxos.html
2•ingve•27m ago•0 comments

Things That Turbo Pascal Is Smaller Than (2011)

https://prog21.dadgum.com/116.html
1•birdculture•28m ago•0 comments

Justice Department Disrupts Iranian Cyber Enabled Psychological Operations

https://www.publicnow.com/view/938A7EFC4064A4EE42581494308F60A13767ADEA
1•Animats•29m ago•1 comments

US Jobless Claims Fell Last Week to Lowest Since January

https://www.bloomberg.com/news/articles/2026-03-19/us-jobless-claims-declined-last-week-to-lowest...
1•DGAP•29m ago•0 comments

Kalshi in Hot Water – What This Means for Startups Like PolyBets

https://www.nytimes.com/2026/03/17/technology/arizona-criminal-charges-kalshi.html
3•realJared54•30m ago•0 comments

Crypto.com lays off 12% of workforce as latest company to cite AI in job cuts

https://www.cnbc.com/2026/03/19/crypto-com-layoffs-12percent-ai-job-loss.html
2•DGAP•30m ago•0 comments

Young Adults Are Not Happy

https://www.allendowney.com/blog/2026/03/19/young-adults-are-not-very-happy/
2•nznbody•31m ago•0 comments