Time Freeze (Empty Server)

Time Freeze (Empty Server)

Server-side NeoForge mod for 1.21.1 that pauses day/night and weather whenever the server has zero players online and automatically resumes the moment someone joins.

Features

• Freeze time and weather while empty
• Grace window (configurable) before freezing to avoid flapping during quick reconnects
• Zero client requirements (works with vanilla or modded clients)
• Lightweight, no mixins

Commands

• /timefreeze status – shows current state, players online, and config

Configuration

A server config file is generated on first run: config/timefreeze-server.toml

Options:

• freezeTime (bool) – lock sun/moon cycle while empty (default: true)
• freezeWeather (bool) – lock rain/thunder state while empty (default: true)
• emptyGraceSeconds (int) – wait N seconds after last player leaves before freezing (default: 10)

Compatibility

• Mod loader: NeoForge (21.1.x)
• Minecraft: 1.21.1
• Java: 21
• Pure server-side logic; clients do not need this mod installed.

FAQ

Q: Does this stop gamerule doDaylightCycle changes?
A: While the server is empty, the mod re-applies the saved time/weather every tick. Manual time/weather changes will snap back until a player joins.

Q: Any known conflicts?
A: Mods that forcibly advance time or weather each tick might fight with the lock when the server is empty.

I have personally tested this with Serene Seasons with no issues. I will continue to monitor this since I will be using this for my modpacks :).