
TFC Caelum
Making Caelum compatible with and use TerraFirmaCrafts calendar and season system plus more
Screenshots




About this Mod
This is an addon for TerraFirmaCraft that bridges the mechanics and features of Caelum to elements of TerraFirmaCraft, such as its calendar and season system. This addon further expands upon the features provided by Caelum, and adds the following:
- Lunar eclipses (aka blood moons)
- Solar eclipses
- Planets
- Rainbows after it has rained
- Increased surface monster presence during blood moons, and even higher if a supermoon is actual simultaneously
There's no guarantee that the mod will work with any random mod that also makes changes to e.g. the moon cycle and/or location of either the sun and/or the moon on the sky. Additionally disable TFC's Calendar Sensitive Moon Phases configuration, as otherwise the moon phases will be out of place.
This naturally requires both mods in order to work.
Available Versions
How to Install TFC Caelum on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).
Install Mod
Open the mod browser in the dashboard and search for "TFC Caelum". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.20.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
TFC Caelum server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.20.1). You can switch loaders with one click in the panel.
Is TFC Caelum compatible with forge and neoforge?
TFC Caelum officially supports forge, neoforge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with TFC Caelum – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if TFC Caelum consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install TFC Caelum with just one click on your server.