Explore how daylight hours change throughout the year in locations across the globe. Tap or hover over different points to update the daylight contour plot below. If you are viewing on desktop, click to lock the selected location.
- Built with D3, SunCalc, Moment.js, and Leaflet
- With data from Moment Timezone and map tiles from OpenStreetMap
- See the source code on GitHub
- Definitions of the different stages of twilight can be found here.
- Read my blog post about this project