/day - Sets the time to Day
/night - Sets the time to Night

/sun- Sets the weather to Sunny
/thunder- Sets the weather to Thunder
/rain - Sets the weather to Raining

/gmc- Sets a persons gamemode to Creative
/gms- Sets a persons gamemode to Survival
/gmsp- Sets a persons gamemode to Spectator
/gma - Sets a persons gamemode to Adventure

/fly - Let's people fly