Setting the time on an arduino mega using Adafruit FONA

Using Arduino Project Guidance
#1

i know the Mega has no realtime clock and i was wondering my project had a GSM card (Adafruit FONA)
and it has an option to get the time from the GSM network

boolean Adafruit_FONA::readRTC(uint8_t *year, uint8_t *month, uint8_t *date, uint8_t *hr, uint8_t *min, uint8_t *sec) {
  uint16_t v;
  sendParseReply(F("AT+CCLK?"), F("+CCLK: "), &v, '/', 0);
  *year = v;

  Serial.println(*year);
}

boolean Adafruit_FONA::enableRTC(uint8_t i) {
  if (! sendCheckReply(F("AT+CLTS="), i, F("OK"))) 
    return false;
  return sendCheckReply(F("AT&W"), F("OK"));
}

is there any way to set this as a system time on bootup ? and use it system wide for timestamps

ie i have the option to press an RF button i would like a log of when it was pressed and the log be written to a SD card in a txt file
i would also like the file to have a timestamp when it was last appended to

now all this is getting over my head now and i was wondering if anyone could point me in the right direction how to accomplish this

Thanks in advance

#2

The Time library has the ability to keep track of time. It can be set/synced using almost any source of time/date information.

#3

thanks i will look in to this

#4