GPS time settings

I have recently bought a GPS module from Adafruit, the module is the Flora GPS module Flora Wearable Ultimate GPS Module : ID 1059 : $24.95 : Adafruit Industries, Unique & fun DIY electronics and kits

I am reading the data from the GPS and getting accurate co-ordinates as well as altitude and ext. But the time and date are wrong for my location. According to this GPS it is 7 hours in advance than the current time as well as a day ahead as well.
Anyone know how to fix this?

Hello ldickson

What time zone are you in? The GPS is probably giving the date and time in UTC.

Not sure if the module can be configured with a local time zone - you may need to do the conversion in your program.

Regards

Ray

My time zone is Pacific Time Zone (UTC-08:00)

I have tried to edit the code to get it to work with it but it is still 7 hours ahead.
The Code is

// Test code for Adafruit Flora GPS modules
//
// This code shows how to listen to the GPS module in an interrupt
// which allows the program to have more ‘freedom’ - just parse
// when a new NMEA sentence is available! Then access data when
// desired.
//
// Tested and works great with the Adafruit Flora GPS module
// ------> http://adafruit.com/products/1059
// Pick one up today at the Adafruit electronics shop
// and help support open source hardware & software! -ada

#include <Adafruit_GPS.h>
#include <SoftwareSerial.h>
Adafruit_GPS GPS(&Serial);

// Set GPSECHO to ‘false’ to turn off echoing the GPS data to the Serial console
// Set to ‘true’ if you want to debug and listen to the raw GPS sentences
#define GPSECHO false

// this keeps track of whether we’re using the interrupt
// off by default!
boolean usingInterrupt = false;

void setup()
{
// connect at 115200 so we can read the GPS fast enough and echo without dropping chars
// also spit it out
Serial.begin(115200);
Serial.println(“Adafruit GPS library basic test!”);

// 9600 NMEA is the default baud rate for Adafruit MTK GPS’s- some use 4800
GPS.begin(9600);
int hours = GPS.hour - 7;

// uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
// uncomment this line to turn on only the “minimum recommended” data
//GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCONLY);
// For parsing data, we don’t suggest using anything but either RMC only or RMC+GGA since
// the parser doesn’t care about other sentences at this time

// Set the update rate
GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ); // 1 Hz update rate
// For the parsing code to work nicely and have time to sort thru the data, and
// print it out we don’t suggest using anything higher than 1 Hz

delay(1000);
// Ask for firmware version
Serial.println(PMTK_Q_RELEASE);
}

long int hours = GPS.hour;

uint32_t timer = millis();
void loop() // run over and over again
{
// read data from the GPS in the ‘main loop’
char c = GPS.read();
// if you want to debug, this is a good time to do it!
if (GPSECHO)
if (c) Serial.print(c);

// if a sentence is received, we can check the checksum, parse it…
if (GPS.newNMEAreceived()) {
// a tricky thing here is if we print the NMEA sentence, or data
// we end up not listening and catching other sentences!
// so be very wary if using OUTPUT_ALLDATA and trytng to print out data
Serial.println(GPS.lastNMEA()); // this also sets the newNMEAreceived() flag to false

if (!GPS.parse(GPS.lastNMEA())) // this also sets the newNMEAreceived() flag to false
return; // we can fail to parse a sentence in which case we should just wait for another
}

// if millis() or timer wraps around, we’ll just reset it
if (timer > millis()) timer = millis();

// approximately every 2 seconds or so, print out the current stats
if (millis() - timer > 2000) {
timer = millis(); // reset the timer

Serial.print("\nTime: ");
Serial.print(GPS.hour 7, DEC); Serial.print(’:’);
Serial.print(GPS.minute); Serial.print(’:’);
Serial.print(GPS.seconds); Serial.print(’.’);
Serial.println(GPS.milliseconds);
Serial.print(“Date: “);
Serial.print(GPS.day-1); Serial.print(’/’);
Serial.print(GPS.month, DEC); Serial.print(”/20”);
Serial.println(GPS.year, DEC);
Serial.print("Fix: “); Serial.print((int)GPS.fix);
Serial.print(” quality: "); Serial.println((int)GPS.fixquality);
if (GPS.fix) {
Serial.print("Location: “);
Serial.print(GPS.latitude, 4); Serial.print(GPS.lat);
Serial.print(”, ");
Serial.print(GPS.longitude, 4); Serial.println(GPS.lon);

Serial.print("Speed (knots): "); Serial.println(GPS.speed);
Serial.print("Angle: "); Serial.println(GPS.angle);
Serial.print("Altitude: "); Serial.println(GPS.altitude);
Serial.print("Satellites: "); Serial.println((int)GPS.satellites);
}
}
}