Realtime Day

Realtime Day

Syncs Minecraft’s day/night cycle to real-world time.

When it’s noon where the server is running, the sun is overhead. When it’s midnight, it’s night in-game. Singleplayer uses your PC’s clock; dedicated servers use the host machine’s timezone (or one you configure).

Features

• Overworld time follows real local time (dawn ≈ 6:00, noon, dusk, midnight)
• Uses the server/host timezone by default
• Optional IANA timezone override (e.g. America/Chicago)
• Optional on-screen real-time clock in the bottom-right corner
• Sleep still works — after a vanilla night skip, time snaps back to real time
• Reload config in-game with /realtimeday reload
• Server sync works without the mod on clients; install on the client to see the HUD

Config

Created automatically at config/realtimeday.json:

{
  "enabled": true,
  "showHud": true,
  "hudTimeFormat": "24h",
  "timezone": "",
  "syncIntervalTicks": 20,
  "dimensions": ["minecraft:overworld"]
}

| Option | Description |
|——–|————-|
| enabled | Turn world time sync on or off |
| showHud | Show the real-time clock in the bottom-right corner |
| hudTimeFormat | HUD clock style: "24h" (22:52) or "12h" (10:52 PM) |
| timezone | Empty = system default; otherwise an IANA timezone id |
| syncIntervalTicks | How often (in ticks) real time is applied to the world clock |
| dimensions | Dimension ids whose default clocks should be synced |

Commands

• /realtimedayhud — toggle the on-screen clock (any player, saved to your client config)
• /realtimedayhud on / /realtimedayhud off — show or hide the clock
• /realtimedayhud 12h / /realtimedayhud 24h — set 12-hour or 24-hour clock (10:52 PM / 22:52)
• /realtimedayhud format — show your current format
• /realtimeday reload — reload world time sync config (server / op)

Notes

• Install on the server (or in singleplayer) for day/night sync. Install on the client for the HUD clock.
• HUD visibility and time format are per-player on each client (config/realtimeday.json).
• Requires Fabric API.