Sun Clock

Gecko4072 203 points 63 comments August 17, 2026
sunclock.net · View on Hacker News

Discussion Highlights (19 comments)

dvh

Let me choose location manually.

Razengan

Man fuck Apple for not allowing custom Apple Watch faces >:( Always the crippled operating system limiting the potential of their amazing hardware

mannanj

Nice. I've been making a version of this that I submitted to ycombinator, testing the thesis "If we schedule our life around the sun including afternoon naps" we perform better. Check it out and give me feedback. It has a long ways to go. https://sunsignal.app

rhema

https://editor.p5js.org/rhemalinder/full/im3tyPBDW - I made this one for myself and it's pretty similar. I have this hard-coded to south dakota, but it looks like this and I made it a while ago. Same idea, except I turn it such that "solar noon" is at the top. Think 12 noon is really "high noon" or solar noon? Nope, not unless you are in the center of a timezone!

dilap

This is neat! Would love the ability to make "true noon" be at the top of the clock, instead of 12.

karmakaze

I would prefer if it showed a regular 12 hours clock face and show the upcoming sunrise or sunset, or two faces one for each.

jasonincanada

It must be clock-making time... I built a 24-hour clock a few days ago but in base-12 and with 72 seconds per minute (to reuse the outer 24-hour dial, with 3 subdivisions to make it closer to the normal second) https://jasonincanada.github.io/24-hour-base-12-clock.html#w...

zamadatix

I love it. It'd be nice if I could click points on a map and see the difference to my local one as well. Or in the calendar view if it'd show a copy of the clock (i.e. coloring not current hand positions) for the time I'm hovered over.

momentmaker

Also made something like this called Sun Path which tracks where the sun is through centuries and how the path deviates ever so slowly. Plus there are all the equinoxes and solstices. https://pilgrimapp.org/sunpath/

sheept

It'd be neat if you could pan a slider through the year to see the sunrise sunset times change

seanalltogether

I've been wanting to build this exact clock for awhile now. My feature request would be to include a timeline at the bottom of the page that I can scroll back and forth through days of the year to see everything shift.

Arshwaraich

Neat! I made something similar to better visualize timezones based off the day/night cycle: https://apps.apple.com/in/app/sun-timezone/id6760567372

fer

Neat. One of my favourite sites, which also shows daylight, is WeatherSpark[0], obviously focused on weather and it allows you to compare locations based on yearly rainfall, cloud cover, muggy conditions, all sorts of stuff. Always check it when going on vacation or relocating. [0] https://weatherspark.com/

vesinisa

Love it! One weird thing: the author of this clock/calendar portrays the year rotating clockwise (click on the calendar icon in top left to see the "annual" calendar): January in 12 to 1 o'clock, February in 1 to 2 o'clock, etc. and December in 11 to 12 o'clock. In a poll of some close friends recently, we found out that most of us (>80% including myself) had always mentalized the year rotating counter-clockwise (starting from January at 12 to 11 o'clock, Februay at 10 to 11 o'clock etc. and finally December in 1 to 12 o'clock.) Bizarely none of us could explain why we had such weird anti-clockwise mental image of the annual cycle, but all who viusalized the year running counter-clockwise said they had done so for as long as they could remember.

mourner

Author of suncalc (the JS library behind the sun calculations) here — happy to see such a nice application of it! Heads up if the author's reading this — I recently released a major overhaul of the library that makes it a lot more precise: https://github.com/mourner/suncalc

svennidal

Nice. I made my solar clock here: svennidal.is/solarclock I'm currently in Iceland and I've been using my clock as my main clock since the Icelandic clock is set to be almost one and half hour to early. I've never really shared it so that is why it's just hardcoded to my location haha.

tizio13

This is great. Reminds me of the Solar Dial watch face on my Apple Watch.

bpev

Been using https://sundial.page recently for weather

Gecko4072

This is the author's account: https://news.ycombinator.com/user?id=perilunar

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