D-Link DSL-3788 User Manual page 64

Section 4 - Configuration
If you enabled Daylight Saving, the following options are available:
Date Start:
Enter the date and time during which daylight saving starts in your
region.
Date End: Enter the date and time during which daylight saving starts in your
region.
Click Save when you are done. To configure and manage the schedule, click
Schedule and refer to Schedule on page 61.
D-Link DSL-3788 User Manual 60