No Player No Day Cycle
by Cubo1ndev
No Player No Day Cycle freezes the day and night cycle while no players are online, and resumes it where it stopped once someone joins.
What it does
The cycle stops when the server is empty and starts again from the same point when a player connects, so a world left unattended keeps its time of day. Only time is affected: mobs, redstone and scheduled events keep running as usual, and the world keeps ticking normally while anyone is online.
The mod is server-side only, so players join without installing anything and the server alone needs it. Architectury API is required, and files are published for Fabric and NeoForge for 1.21.1, with the 1.0.0 file dated 2026-05-03 on both loaders. The code is open source under the MIT License.
Key features
Cycle freezes when empty
Day and night stop advancing while no player is online, so the world does not drift through nights while nobody plays.
Resumes where it stopped
When a player joins, the cycle continues from the exact time it was frozen at.
Normal world ticking
Mobs, redstone and scheduled events keep running, and only the time of day is held.
Lightweight server mod
The server-side code is small and applies only to the day cycle, leaving other world logic untouched.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Idle survival servers
A server that empties overnight keeps its time of day, so players returning later find the same light they left.
Pausing time between sessions
Owners of small private servers can stop the clock between play sessions without changing the rest of the world.
Who it’s for: Server owners who want the time of day to hold while the server is empty. Players need no installation, since the mod runs on the server alone.
How it compares
NightLock is a NeoForge mod for 1.21.1, server required and client optional, released under the GNU General Public License v3.0 or later. Day & Night Control is a NeoForge mod for 1.21.8 with a client and server environment, under All rights reserved. Unlike this mod, both need players to run them as well.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| No Player No Day Cycle | Fabric and NeoForge | 1.21.1 | Server-side only | 2026-05-03 |
| NightLock | NeoForge | 1.21.1 | Server required, client optional | 2025-09-04 |
| Day & Night Control | NeoForge | 1.21.8 | Client and server | 2026-05-30 |
Questions
Does No Player No Day Cycle need Architectury API?
Do players need to install No Player No Day Cycle?
Which loaders have a file for 1.21.1?
In the catalog
No Player No Day Cycle is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from Cubo1ndev
Similar mods
What the author says
A lightweight server-side Minecraft mod that freezes the day/night cycle when no players are online. The world keeps ticking normally — mobs, redstone, and scheduled events all continue — only the time of day stops.
Official listing
- Modrinth page
- modrinth.com/mod/no-player-no-day-cycle
- Owner
- Cubo1ndev
- Published
- 2026-05-03
- Updated on Modrinth
- 2026-05-03
- Facts verified
- 2026-10-15