D-Link DFL-2500 - Manual (Page 332)

DST offset in minutes.
Default: 0
TimeSync_DSTStartDate
What month and day DST starts, in the format MM-DD.
Default: none
TimeSync_DSTEndDate
What month and day DST ends, in the format MM-DD.
Default: none
TimeSync_DSTStartDate Chapter 13. Advanced Settings
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