User manual
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6.11Basic settings
6.11.1 SNTP
NTP (Network Time Protocol) is a protocol and software implementation for synchronizing the clocks
of computer systems over packet-switched data network. It provides coordinated universal time including
scheduled adjustments. No information about time zones or daylight saving time is transmitted; this
information is outside its scope and it must be obtained separately.
（
Figure 6.11.1
）
Local Time
To configure the time by hand to undated the time of the device
Enable NTP
To update the time of the device by using NTP protocol
Time Zone
Standard time zones could be defined by geometrically subdividing the Earth's spheroid into 24 lines.
The local time in neighboring zones would differ by one hour. And the variation in the position of the sun
from one end of the zone to the other (east vs. west) would be at most 1/24 of the sky. Most of the 25
nautical time zones (specifically UTC−11 to UTC+11) are indeed defined this way, and are 15° of
longitude wide. An hourly zone in the central Pacific Ocean is split into two 7.5°-wide zones (UTC±12) by
the 180th meridian, part of which coincide with the International Date Line.
