Lux Lunae
by ItzRenault
Lux Lunae is a Fabric client mod that changes nighttime ambient light according to the current moon phase in the world.
What it does
Night brightness in vanilla Minecraft stays the same whatever the moon looks like. Lux Lunae changes the sky light at night so that a full moon produces a brighter night and a new moon a darker one, with transitions between phases that move gradually rather than switching at once. The change only affects how night lighting is rendered on the client, so no world data, mobs or gameplay rules are altered.
The mod includes a subtle moonlight tint for the nighttime sky, with adjustable strength and a configurable color for players who want a cooler atmosphere. Brightness and tint settings are available through a Mod Menu compatible configuration screen. Light sources such as torches and lanterns stay readable during the dark hours, since block light is kept separate from the moonlight adjustment.
Lux Lunae is published for Fabric only, and its files target 1.21.1. Only the player's game needs it, and servers run without it. The license is the MIT License, and the project is not open source.
Key features
Moon phase brightness
Full moons brighten the night and new moons darken it, following the in-game lunar cycle.
Smooth phase transitions
Lighting shifts gradually between moon phases instead of jumping at each change.
Moonlight tint
A configurable tint colors the nighttime sky, with its strength adjustable from the settings.
Readable block light
Torches, lanterns and other light sources keep their normal brightness during the night.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want the night sky to follow the lunar cycle on the client, and who are willing to tune brightness and tint in the configuration screen. Server owners do not need to install it.
How it compares
False Reality • Time Changer is a Fabric client-side mod released under the MIT License, with files for 1.21 – 1.21.8 and open source code. Moon Info Updated is also a Fabric client-side mod under the MIT License, but it targets 1.21.1 and is open source. Lux Lunae is limited to 1.21.1, is client-side only and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Lux Lunae | Fabric | 1.21.1 | Client-side only | 2026-07-17 |
| False Reality • Time Changer | Fabric | 1.21 – 1.21.8 | Client-side only | 2025-08-30 |
| Moon Info Updated | Fabric | 1.21.1 | Client-side only | 2025-06-06 |
Questions
Does Lux Lunae need to be installed on the server?
Which game version does Lux Lunae support?
Can the moonlight tint be turned off?
In the catalog
Lux Lunae is one of 12,078 Decoration mods on ModsFinder, and one of 6,982 Decoration mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
Lux Lunae is a lightweight client-side Fabric mod that makes Minecraft nights react to the current moon phase. Instead of using the same ambient darkness every night, the mod adjusts nighttime sky light based on the in-game lunar cycle. Full moons become brighter, new moons become darker, and the transition between…
Official listing
- Modrinth page
- modrinth.com/mod/lux-lunae
- Owner
- ItzRenault
- Published
- 2026-07-17
- Updated on Modrinth
- 2026-07-17
- Facts verified
- 2026-10-15