#include <Wire.h>
#include "DS1307.h"
DS3231 RTC; 
char weekDay[][4] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
DateTime dt(2011, 11, 10, 15, 18, 0, 5);
void setup ()
{ Serial.begin(57600);//set baud rate to 57600
Wire.begin();
RTC.begin();
RTC.adjust(dt); 
}
void loop ()
{
DateTime now = RTC.now(); 
Serial.print(now.year(), DEC);
Serial.print("/");
Serial.print(now.month(), DEC);
Serial.print("/");
Serial.print(now.date(), DEC);
Serial.print(" ");
Serial.print(now.hour(), DEC);
Serial.print(":");
Serial.print(now.minute(), DEC);
Serial.print(":");
Serial.print(now.second(), DEC);

Serial.println();
Serial.print(weekDay[now.dayOfWeek()]);
Serial.println();
delay(1000);
}