Dell PowerEdge M420 Reference Manual page 1606

Command Mode
Global Configuration
User Guidelines
The CLI mode changes to Time-Range Configuration mode when you
successfully execute this command.
Example
console(config)#time-range timeRange_1
absolute
Use the absolute command in Time Range Configuration mode to add an
absolute time entry to a time range.
Use the no form of this command to delete the absolute time entry in the
time range.
Syntax
absolute {[start
no absolute
Parameter Description
Parameter
Start time date
End time date
1602
Time Ranges Commands
time date ] [end time date ]}
Description
Time and date at which the configuration that referenced the
time range is in effect. The time is expressed in a 24-hour clock,
in the form of hours:minutes. For example, 8:00 is 8:00 am and
20:00 is 8:00 pm. The date is expressed in the format day
month year. If no start time and date are specified, the
configuration statement is in effect immediately.
Time and date at which the configuration that referenced the
time range is no longer in effect. Same time and date format as
described for the start. The end time and date must be after the
start time and date. If no end time and date are specified, the
configuration statement is in effect indefinitely.