clock summer-time is a Cisco IOS global configuration command that makes a device’s clock follow recurring daylight-saving-time or summer-time transitions. section 2.1.2
Use the command where local time changes seasonally: clocks move forward in spring and backward in fall. The recurring schedule identifies the time-zone name and transition dates and times. section 2.1.2
Configure the feature with this global-configuration syntax:
- `clock summer-time name recurring start-date-time end-date-time` section 2.1.2
- For Toronto, label the daylight-saving period EDT; begin at 02:00 on the second Sunday of March and end at 02:00 on the first Sunday of November. section 2.1.2
- Pair the setting with `clock timezone`, because the default time zone is UTC and local offsets determine displayed time. section 2.1.2 section 2.4
Figure 2.1 The syntax of the clock summer-time command. The example specifies that EDT begins at 02:00 on the second Sunday of March and ends at 02:00 on the first Sunday of November.
Inspect the syntax figure for the recurring EDT schedule and its second-Sunday-of-March and first-Sunday-of-November boundaries. section 2.1.2
