MineCal - An in-game calendar system This plugin will keep track of the current Minecraft in-game date. You can post the date on signs and see the current date with a command. The weekday names, month names, and number of days in each month are completely customizable. By default, it uses real-life month names and weekday names, however, it is intended to be changed to fit in your world. Now called RolePlayCalendar, and is on BukkitDev.