Chapter 6: Using the Web Interface128If the daylight saving time rules are not available for the selected timezone, the checkbox is not configurable.4. Choose one of the methods to set the date and time: To customize the date and time, select the User Specified Timeradio button, and then enter the date and time in appropriatefields. Use the yyyy-mm-dd format for the date and the hh:mm:ssformat for the time. The time is measured in 24-hour format so enter 13 for1:00pm, 14 for 2:00pm, and so on. To let an NTP server set the date and time, select the"Synchronize with NTP Server" radio button. There are two waysto assign the NTP servers. To use the DHCP-assigned NTP servers, make sure the"Always use the servers below and ignore DHCP-providedservers" checkbox is deselected. This method is usable onlywhen either IPv4 or IPv6 DHCP is enabled. To use the NTP servers that are manually specified, selectthe "Always use the servers below and ignoreDHCP-provided servers" checkbox, and specify the primaryNTP server in the First Time Server field. A secondary NTPserver is optional.Click Check NTP Servers to verify the validity andaccessibility of the specified NTP servers.Note: If the EMX device's IP address is assigned through IPv4 orIPv6 DHCP, the NTP servers can be automatically discovered. Whenthis occurs, the data you entered in the fields of First and SecondTime Server will be overridden.5. Click OK.The EMX follows the NTP server sanity check per the IETF RFC. If yourEMX has problems synchronizing with a Windows NTP server, seeWindows NTP Server Synchronization Solution (on page 130).
