Implementing time-based ACL rules
You can implement ACL rules based on the time of day by applying a time range to them. A time-based ACL rule only takes effect in any time periods specified by the time range.
The following basic types of time range are available:
Periodic time range—Recurs periodically on a day or days of the week.
Absolute time range—Represents only a period of time and does not recur.
You can specify a time range in ACL rules before or after you create it. However, the rules using the time range take effect only after you define the time range.