NMEA-0183 message: ZDA

UTC day, month, and year, and local time zone offset

An example of the ZDA message string is:

$GPZDA,172809.456,12,07,1996,00,00*45

ZDA message fields

Field

Meaning

0

Message ID $--ZDA

Talker ID can be:
GP: GPS only
GN: More than one constellation

1

UTC

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 through ±13 hours

6

Local time zone offset from GMT, ranging from 00 through 59 minutes

7

The checksum data, always begins with *

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.