Automatically reset the nether and/or end dimensions once a month on server startup.
Developed for Minecraft Forge 1.12.2.
The mod doesn't do anything until you add dimension names to the configuration file auto_dim_reset.txt which can be found in the config folder.
The default reset interval is a month, but can be configured in auto_dim_reset_time.txt.
Example of format: 0y3m0d0h
Which would correspond to resetting every 3 months.
The file last_dim_reset.txt in the world folder will be updated with the current date when a dimension reset is triggered.
This mod only resets dimensions on server load, which means you will need to have the server automatically restart on a regular basis.
Additionally, players who log out in a dimension that is then reset will most likely experience kinetic energy, or suffocate in a wall.