Real Time World (RTW)
Real Time World (RTW) makes Minecraft's in-game clock follow real-world time in a chosen time zone, and it is available for Forge and several server platforms.
What it does
Each world can be given a time zone, so the day and night cycle tracks the local clock of that zone. A RealTimeConverter takes the real-world time, applies the configured offset and maps it onto the in-game day. Minecraft counts time in ticks, with 24,000 ticks per day and tick 0 at 6.00 am, and the mod aligns 18,000 ticks with real-world midnight so in-game midnight matches. Only the time of day is rewritten, so the in-game day counter and moon phases are kept through the alignFullTime logic.
Time is re-synchronised at intervals, and the mod interpolates smoothly between two synchronisations to avoid visible jumps in the sky. The rtw.properties file is generated on first launch. The mod works with Bukkit, Spigot and Paper servers as well as Forge, in both server and single-player modes. It is published under the MIT License and its source code is public, and an rtw-neoforge module exists for those who track NeoForge rather than Forge.
Key features
Time zone per world
Each world takes its own time zone, so one server can run several worlds on different local clocks.
Smooth time transitions
Interpolation between synchronisations keeps the sky from jumping when the mod corrects the clock.
Command control
The rtw command changes the time zone, enables or disables the cycle and sets a specific time.
Preserved moon phases
The in-game day counter and moon phases continue as usual because only the time of day is rewritten.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners who want each world to run on a chosen time zone, and players on Forge who want the in-game sky to match local daylight.
How it compares
No-Fly Zone is a Forge and NeoForge mod for 1.20.1 – 1.20.2, released under All rights reserved and not open source. GolemMechanic is open source under the GNU General Public License v3.0 only, loads on Fabric, Forge and NeoForge, and covers 1.15 – 26.3, so it does not manage world time. Damage zone is a Forge and NeoForge mod for 1.14.4 – 1.21.8, under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Real Time World (RTW) | Forge | 1.20 – 1.21 | Not published | 2026-08-14 |
| No-Fly Zone | Forge and NeoForge | 1.20.1 – 1.20.2 | Client and server | 2023-10-26 |
| GolemMechanic | Fabric, Forge and NeoForge | 1.15 – 26.3 | Not published | 2026-10-12 |
| Damage zone | Forge and NeoForge | 1.14.4 – 1.21.8 | Client and server | 2025-08-30 |
Questions
Which loader does Real Time World require?
Does the server need the mod for a time zone to apply?
Where is the time zone set?
In the catalog
Real Time World (RTW) is one of 29,952 Game mechanics mods on ModsFinder, and one of 13,316 Game mechanics mods for Forge. 15,770 mods support Minecraft 1.21.
More from MoeWorth Studios
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What the author says
Synchronises Minecraft’s in-game time with real-world time, in the time zone of your choice. Compatible with Bukkit, Spigot, Paper, Forge and Fabric, for both server and single-player modes. The in-game day counter (used for moon phases) is preserved thanks to alignFullTime; only the time of day is rewritten.
Official listing
- Modrinth page
- modrinth.com/mod/rtw-plugin
- Owner
- MoeWorth Studios
- Published
- 2026-08-14
- Updated on Modrinth
- 2026-08-14
- Facts verified
- 2026-10-15