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5700/5800 GPS Receiver User Guide 173
NMEA-0183 Output A
5700/5800 GPS Receiver Operation
ZDA UTC Day, Month, And Year, and Local Time Zone Offset
An example of the ZDA message string is shown below. Table A.16
describes the message fields.
$GPZDA,172809,12,07,1996,00,00*45
Fields 5 and 6 together yield the total offset. For example, if field 5 is –5
and field 6 is +15, local time is 5 hours and 15 minutes earlier than
GMT.
Table A.16 ZDA message fields
Field Meaning
1UTC
2 Day, ranging between 01 and 31
3 Month, ranging between 01 and 12
4 Year
5 Local time zone offset from GMT, ranging from 00 to
±13 hours
6 Local time zone offset from GMT, ranging from 00 to
59 minutes