Chapter 43 System
ZyWALL/USG Series User’s Guide
826
Get from Time
Server
Select this radio button to have the ZyWALL/USG get the time and date from the time
server you specify below. The ZyWALL/USG requests time and date settings from the
time server under the following circumstances.
• When the ZyWALL/USG starts up.
• When you click Apply or Synchronize Now in this screen.
• 24-hour intervals after starting up.
Time Server
Address
Enter the IP address or URL of your time server. Check with your ISP/network
administrator if you are unsure of this information.
Sync. Now Click this button to have the ZyWALL/USG get the time and date from a time server (see
the Time Server Address field). This also saves your changes (except the daylight
saving settings).
Time Zone Setup
Time Zone Choose the time zone of your location. This will set the time difference between your
time zone and Greenwich Mean Time (GMT).
Automatically Sync
Time Zone
Select this for the ZyWALL/USG to automatically get its time zone.
Daylight Saving
Enable Daylight
Savings
Daylight savings is a period from late spring to early fall when many countries set their
clocks ahead of normal local time by one hour to give more daytime light in the evening.
Select this option if you use Daylight Saving Time.
Automatically
adjust clock for
Daylight Saving
Time
Select this for the ZyWALL/USG to automatically adjust the time if daylight savings is
implemented in its time zone.
Start Date Configure the day and time when Daylight Saving Time starts if you selected Enable
Daylight Saving. The at field uses the 24 hour format. Here are a couple of examples:
Daylight Saving Time starts in most parts of the United States on the second Sunday of
March. Each time zone in the United States starts using Daylight Saving Time at 2 A.M.
local time. So in the United States you would select Second, Sunday, March and type
2 in the at field.
Daylight Saving Time starts in the European Union on the last Sunday of March. All of
the time zones in the European Union start using Daylight Saving Time at the same
moment (1 A.M. GMT or UTC). So in the European Union you would select Last,
Sunday, March. The time you type in the at field depends on your time zone. In
Germany for instance, you would type 2 because Germany's time zone is one hour
ahead of GMT or UTC (GMT+1).
End Date Configure the day and time when Daylight Saving Time ends if you selected Enable
Daylight Saving. The at field uses the 24 hour format. Here are a couple of examples:
Daylight Saving Time ends in the United States on the first Sunday of November. Each
time zone in the United States stops using Daylight Saving Time at 2 A.M. local time. So
in the United States you would select First, Sunday, November and type 2 in the at
field.
Daylight Saving Time ends in the European Union on the last Sunday of October. All of
the time zones in the European Union stop using Daylight Saving Time at the same
moment (1 A.M. GMT or UTC). So in the European Union you would select Last,
Sunday, October. The time you type in the at field depends on your time zone. In
Germany for instance, you would type 2 because Germany's time zone is one hour
ahead of GMT or UTC (GMT+1).
Table 346 Configuration > System > Date and Time (continued)
LABEL DESCRIPTION
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