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Set Local Time
Use the ◄ or ► key to move the cursor _ and use the number keys to change the numbers. Use the
▲ or ▼ button to toggle between "Y" and "N" for Daylight Saving Time, or "+" and "-" for UTC (Coordinated
Universal Time) setting. Hold the arrow key to fast forward or rewind the cursor.
In order to make the hand controller reflect your correct local time, time zone information has to
be entered. Press the ◄ or ► key, move the cursor to the third line "UTC -300 Minute(s)" to set the time
zone information (add or subtract 60 minutes per time zone). For example:
Boston is "UTC -300 minutes"
Los Angeles is "UTC -480 minutes"
Rome is "UTC +60 minutes"
Beijing is "UTC +480 minutes"
Sydney is "UTC +600 minutes"
All the time zones in North America are "UTC –", as shown in the following table, so ensure the
display shows "UTC -" instead of "UTC +" if in North or South America.
Time Zone
Hour behind UT
Enter UTC
To adjust minutes, move the cursor to each digit and use the number keys to input the number
directly. Use ▲ or ▼ key to toggle between "+" and "-". When the time information entered is correct, press
ENTER and go back to the previous screen. Note that fractional time zones can be entered.
Do not manually add or subtract an hour from displayed time to reflect Daylight Saving Time (DST).
Instead please select "Y" for DST when daylight saving time begins.
2020-10-01 12:01:36
UTC -300 Minute(s)
W071d08m50s
N42d30m32s
For other parts of the world you can find your "time zone" information from internet.
Set Observation Site Coordinate
The third and fourth lines display the longitude and latitude coordinates, respectively. The longitude
and latitude coordinates will be automatically updated when the GPS picks up satellite signals. "W/E"
means western/eastern hemisphere; "N/S" means northern/southern hemisphere; "d" means degree; "m"
means minute; and "s" means second.
Press ◄ or ► key to move the cursor and using ▲ or ▼ key to toggle between "W" and "E", "N" and
"S", using number key to change the numbers. It is always a good idea to do your home work to get the
GPS coordinates before traveling to a new observation site.
The site coordinates information can be found from your smart phone, GPS receiver or via the
internet. Site information in decimal format can be converted into d:m:s format by multiplying the decimal
numbers by 60. For example, N47.53 can be changed to N47º31'48": 47.53º = 47º +0.53º,
0.53º=0.53x60'=31.8', 0.8'=0.8x60"=48". Therefore, 47.53º=47º31'48" or 47d31m48s.
Enter Time and Site Info by Sync with your SmartPhone
When iOptron Commander Lite is in action (WiFi version ASCOM, or iOS/Android App), one may
easily import the GPS info from a smartphone into the mount/hand controller. There is no worry about
Hawaii
Alaska
-10
-9
-600
-540
DST:
N
Daylight Saving Time
Northern
23
Pacific
Mountain
-8
-7
-480
-420
Central
Eastern
-6
-5
-360
-300
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