You searched for alarm
1. alarm
Syntax: alarm <minutes>
If you need a reminder to quit at a certain time or to do something else,
you can set an alarm to sound in x amount of minutes. Once the alarm
sounds, it will beep you if you have your volume turned on and it will send
you a message across your screen. Alarms save through quitting and game
reboots, so if you quit and log back in later, your alarm will still be
armed and accurate. For example, if you set your alarm to go off in 10
minutes, quit the game, and log in 7 minutes later, your alarm will have 3
minutes left on it. If your alarm has gone off while you are not in the
game, you will not be notified upon logging in.
Typing alarm without an argument will show you when your current alarm, if
you have one, will sound.