DAVIS Vantage Pro2 Console Manual page 16

Setup Mode
If you do not know your latitude and longitude, there are several ways to find
out. Many atlases and maps include latitude and longitude lines. You can also
talk to the reference department of your local library, call your local airport, or
search on the Internet. The more accurate you are, the better; however, a rea-
sonable estimate will work, too.
1. Press the right and left arrows to move between fields.
2. Press the up and down arrows to change the settings up or down.
3. To select between hemisphere, press 2ND and then UNITS.
4. Press DONE to move to the next screen.
Screen 6: Longitude
The console uses longitude along with latitude to determine your location,
allowing it to adjust the forecast and calculate the times for sunset and sunrise.
See Screen 5: Latitude for information on determining your latitude.
• Longitude measures distance east or west of the Prime Meridian, an imagi-
nary line running north and south through Greenwich, England.
• Longitude is used with latitude to identify your position on earth.
1. Press the right and left arrows to move between fields.
2. Press the up and down arrows to change the settings up or down.
3. To select the East or West Hemisphere, press 2ND, then UNITS.
4. Press DONE to move to the next screen.
Screen 7: Time Zone
The console is pre-programmed with a combination of US time zones and the
names of major cities representing time zones around the world. You can also
configure your time zone using the Universal Time Coordinate (UTC) offset.
Note: UTC offset measures the difference between the time in any time zone and a standard time, set
by convention as the time at the Royal Observatory in Greenwich, England. Hayward, California,
the home of Davis Instruments, observes Pacific Standard Time. The UTC offset for Pacific Stan-
dard Time is -8:00, or eight hours behind Universal Time (UTC). When it's 7:00 pm (1900 hours)
UTC, it's 19 - 8 = 1100 hours, or 11:00 am in Hayward in winter. When daylight savings time is
observed, an hour is added to the offset time automatically. Use this function in correlation with
Screen 8.
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Screen 6: Longitude
Screen 7: Time Zone