Skyoseasons

• A lot of config options.
• Custom seasons : you can add or remove as many seasons as you want.
• Day / night lengths can be configured for each season !
• Can be hooked with ProtocolLib (no modification on your world). 1.11 compatible !
• Snow placing / melt.
• Calendar system.
• Automatically make a backup of your worlds when the plugin loads a world for the first time.
• Automatic updates (can be disabled).
• Open-source (licensed under GNU GPL v3).
• Many many more ;)

This plugin utilizes bstats.org metrics system, which means that the following information is collected and sent to bstats.org :

• A unique identifier.
• The server's version of Java.
• Whether the server is in offline or online mode.
• The plugin's version.
• The server's version.
• The OS version/name and architecture.
• The core count for the CPU.
• The number of players online.
• The Metrics version.

• Connection to curseforge.com.
• Plugin version compared against version on curseforge.com.
• Downloading of the plugin from curseforge.com.