
Time Clocks 2 and 3 is entered into the system and set for time and
dates exactly like Time Clock 1.
The system automatically calculates the time of sunrise and sunset
each day. Sunrise/sunset can be specified as the time a scheduling
command is executed, as an enable/disable time, or as a darkness
conditional on a scheduling command or event button.
To enable the system to properly calculate sunrise and sunset times,
latitude, longitude, and time zone must be set up during installation.
These items should be set to the proper values for the location where
the Omni is installed. The latitude and longitude for a particular
location may be obtained from an almanac or map of the area. These
values should be entered to the nearest degree.
The value entered for the time zone is the number of hours difference
between local standard time at the Omni location and Greenwich
Mean Time. The following values should be used for the standard
time zones in North America:
ZONE
NAME
4 ATLANTIC
5 EASTERN
6 CENTRAL
7 MOUNTAIN
8 PACIFIC
9 YUKON
10 ALASKA-HAWAII
11 BERING
The value specified for longitude may be adjusted to correct for areas,
such as Nova Scotia, where the local time differs from Greenwich
Mean Time by a non-hourly amount. The calculated time of
sunrise/sunset will change by four minutes for every degree change in
longitude. To cause the calculated sunrise/sunset to occur later, enter
a larger value for longitude. Enter a smaller value for longitude to
cause the time to occur earlier.
Latitude, Longitude,
Time Zone
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