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.

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
}
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.To use Spyglass Astronomy Sync, the following are required:
Both the server and the client must have Spyglass Astronomy Sync installed for the synchronization to take effect.