How do I install Spyglass Astronomy Sync?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on Modrinth — not every file is mirrored on our own servers.

What Minecraft version does Spyglass Astronomy Sync work with?

The listing gives Minecraft 26.1, 26.1.1, 26.1.2. This is the version stated by the author or source site, not something we verified ourselves.

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Spyglass Astronomy Sync

by fliplus · on Modrinth

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Fabric only.

Minecraft 26.1–26.1.2Newest
Minecraft 1.21.11
Minecraft 1.21.9–1.21.10
Minecraft 1.21–1.21.8

⬇ Download for 26.1–26.1.2 ⬇ Download for 1.21.11 ⬇ Download for 1.21.9–1.21.10 ⬇ Download for 1.21–1.21.8

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Spyglass Astronomy Sync

Spyglass Astronomy Sync is an extension of Spyglass Astronomy that adds multiplayer support. With this mod installed, all players will share the same sky automatically without needing to manually sync via commands.

Demo

Configuration

By default, Spyglass Astronomy Sync disables most /sga:admin commands. This behavior can be changed in the configuration file, located at config/spyglass-astronomy-sync.json.

Default configuration:

{
  "allow_admin_commands": false
}

Set allow_admin_commands to true to allow all /sga:admin commands for every player. Note that players with permission level 2 or higher will bypass this setting.
The configuration file is only read at server startup. Restart the server after making changes for them to take effect.

Dependencies

To use Spyglass Astronomy Sync, the following are required:

Fabric API
Spyglass Astronomy on the client (server does not need it).

Both the server and the client must have Spyglass Astronomy Sync installed for the synchronization to take effect.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 26.1, 26.1.1, 26.1.2
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

Verified by MCModsHub

Ships as spyglass-astronomy-sync-1.0.0+26.1.2.jar — drop this file into the mods folder
Download size: 59 KB
Download link checked 30 Aug 2026 — working

These come from our own check of the pack file, not from the source page.

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