Short description
A Minecraft/Spigot Plugin that allows to define a custom duration for day and night on the server (change the time/day-night-cycle in game)
The duration of day and night can be set individually.

Install/Setup

1. Put the customtime.jar in the "plugins" folder of your spigot server
2. Run the server
3. Use the commands to set up the plugin to your preferred settings, or change the configuration in the "./plugins/Customtime/config.yml" file. If you change the "config.yml" you will need to restart the server for the changes to take effect.

Available Commands

• /custtomtime on
  Starts the custom day night cycle
• /customtime off
  Stops the custom day night cycle
• /customtime autostart true|false
  Activates/disables the autostart of the custom day night cycle when starting the server
• /customtime duration day|night +int
  Set the duration of days and nights in seconds

Settings in the config.yml

• autostart: true|false
  start the custom day night cycle with every start of the server (true = start | false = do not activate on startup)
• pollingrate: +int
  The polling rate defines how often the server calculates and sets the new in game time. 1 means the in game time will be updated every server tick (approx 20 times per second - more load for the server). 100 means the server will update the in game time every 100 ticks, e.g. every 5 seconds. This costs less performance, but sun and moon might "jump" forward.
• durationDay: +long/+int
  The duration of an in game day in seconds (default value of 3600 means 1 Minecraft day from dawn to dusk) takes 1 hour
• durationNight: +long/+int
  The duration of an in game night in seconds (default value of 720 means 1 Minecraft night from dusk to dawn) takes 12 minutes
• allowtimechange: true|false
  Allow/disallow the use of the "/time set" command (true = allow command, false = disallow command)
• allowsleep: true|false
  true allows the players to skip the night by sleeping, true prevents it
• worldname: [name]
  Name of the game world (as set in server.properties). Currently, still necessary for this plugin.
• save:
  This is an internal value of the plugin that saves the current time on the server (so the custom day-night cycle can continue after a server restart)

Note
I build that plugin a long time ago (I think for Minecraft 1.8) but I keep it updated to the current spigot version. It's probably not the best code I wrote, and I learned a lot since then, but I do not have the spare time for a rewrite and the plugin still does its job very well