# SunCalc

5 Hacker News commenters recommended SunCalc and 0 criticized it, November 2025 to November 2026. It was recommended in 2 of 13 months.

**Verdict:** A JavaScript library for working out sun position and sunlight timing at a location, which people reach for in projects that need this data.

## Why people recommend it

- Go-to library for sun-related projects (2 comments): "Thank you for an amazing library; It's the first that I reach for every time I have a project with this need." ([source](https://news.ycombinator.com/item?id=49345053)) "this library would be extremely helpful" ([source](https://news.ycombinator.com/item?id=49345925))
- Shows when sunlight hits a location (1 comments): "Very useful to figure out when/where sunlight will hit your house." ([source](https://news.ycombinator.com/item?id=46626904))
- More precise sun calculations (1 comments): "makes it a lot more precise" ([source](https://news.ycombinator.com/item?id=49336758))

## Alternatives hackers recommend

- [jQuery](https://hackerapproved.com/p/jquery.md): 111 recommend
- [Picknplace.js](https://hackerapproved.com/p/picknplace-js.md): 58 recommend
- [Alpine.js](https://hackerapproved.com/p/alpine-js.md): 50 recommend
- [Effect (TypeScript library)](https://hackerapproved.com/p/effect.md): 38 recommend
- [Video.js](https://hackerapproved.com/p/video-js.md): 24 recommend

## Cite as

Hacker Approved, "SunCalc", https://hackerapproved.com/p/suncalc-javascript-library/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).