Built a couple of local layers, Blue Marble & Timezones, would you want them upstream?

[NateDogDotNet]

I've been running World Monitor self-hosted for a while now and built a couple of map layer pieces to fill some wishlist items of mine. I just wanted to offer them up if they are of interest to you. If not, no worries.

First piece is a new Blue Marble layer that works on both the 2D map and the 3D globe, and composes with the existing Day/Night toggle.

On the 2D map, the blueMarble toggle adds NASA BMNG imagery as a MapLibre raster source. When Day/Night is also on, the dark side swaps to NASA Black Marble city lights and the day side keeps BMNG.

On the 3D globe, the toggle swaps the globe to NASA imagery with both BMNG and Black Marble bundled locally. Black Marble goes on as an emissive texture, plus a night-mask shader inject on the MeshPhongMaterial so the city lights only render where the sun isn't hitting.

Also rolled in there: sun-tracking directional light, atmosphere tint LERP near the terminator, slow cloud sphere drift. Refresh tick is 5 minutes to match the existing refresh.

Second piece is timezone bands on both 2D and 3D. New timezones toggle, bundled with a Mapshaper-simplified Natural Earth GeoJSON (267 KB, Antarctic clipped, dateline rings cleaned). 3D uses globe.gl paths plus UTC labels merged into the existing labelsData call.

If you'd want a PR, I'd include this in the body so you don't have to worry about commercial relicensing:

I, @NateDogDotNet, grant the WorldMonitor project and maintainer a perpetual, irrevocable, worldwide, royalty-free right to use, modify, sublicense, and relicense this contribution under any terms (including commercial), and waive any future claim of ownership.

2D Blue Marble + Day/Night — city lights on the night side, BMNG on the day side

3D globe Blue Marble + Day/Night — city lights bound to the dark hemisphere via the night-mask shader

2D timezones + Day/Night — UTC labels readable across the seam

3D globe with timezones + Day/Night + Blue Marble all on