DatapacksJava
Realistic Days
This datapack makes minecraft days/nights last 12 real-life hours. A dreadful addition to your next 100 days world...
⬇ Download on ModrinthThis datapack does two things:
- it makes the daylight cycle last 24 hours.
- It makes sleeping through nights impossible [WIP].
3 minecraft days = 1 IRL hour
... and therefore,
72 minecraft days = 24 IRL hours
Therefore, I made the daylight cycle advance by 1 tick every 72 ticks, giving the illusion of a longer day/night.
NOTE: Since the code in this datapack runs recursively, there can be some lag depending on what computer you're playing on. Also, make sure to set doDaylightCycle to false upon world creation.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.8
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Downloads as realistic_days_datapack_1.21.8.zip
- Download size: 31 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.