D-Link DNS-313 User Manual page 22

Section 3 - Configuration
Click 'Set Time' to sync with the local computer.
From My Computer
This option will synchronize the DNS-313 clock with the computer being used to configure it.
Click 'Set Time' to sync with the local computer.
NTP Server
Network Time Protocol (NTP) synchronizes the DNS-313 with an Internet time server.
Enter the IP Address or domain name of the time server you want to sync the DNS-313 with and click 'Set Time'.
Set Date and Time Manually
This option allows you to set the time and date manually.
Enter the appropriate time and date and click 'Set Time'.
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