Time and Date Calculator
Calculate date differences, or add and subtract time
What it does
A free calculator with three modes: find the exact difference between two dates or times, or add and subtract days, weeks, months, and years from a date. It correctly handles leap years, months of different lengths, and daylight saving time changes, including local times that don't exist or repeat during a clock change. Optional time zone support on each side. No sign-up, runs entirely in your browser.
Does the same job
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Time and Duration Tools18d ago · timeandduration.com · ▲1Sub-100ms clean, client-side time & date calculators
More work this month
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The app store for voice native apps that lives in your notch
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The New Calendly▲211Handle all of the work before, during, and after meetings
Work · 17d ago · calendly.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io
- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com