LevelOne GTL-5280 Manual - Page 20

The switch supports valid configurable day light saving time is -5 ~ +5 step one hour. The zero for this parameter means it need not have to adjust current time, equivalent to in-act daylight saving. You don't have to set the starting/ending date as well. If you set daylight saving to be non-zero, you have to set the starting/ending date as well; otherwise, the daylight saving function will not be activated.  Time Set Offset: Provide the Daylight saving time set offset. The offset is given in minutes east of GMT. The valid range is from 1 to 1440 minutes. default is 60 mins  Daylight Savings Type: Provide the Daylight savings type selection. You can select " By Dates" or "Recurring" two type for Daylight saving type.  From: To configure when Daylight saving start date and time, the format is "YYYY-MMDD HH:MM".  To: To configure when Daylight saving end date and time, the format is "YYYY-MMDD HH:MM". NOTE: The under "from" and "to" was displayed what you set on the "From" and "To" field information. 12