As time passes more late night features will be added. To get the latest commands consult online help: http://dms.deadm.com/online-help/late-night-commands.html
Or in game just type: help
After 9:00 P.M. E.S.T. (21:00 hrs) the server changes and does not revert back until 9:00 A.M. the next moarning.