#include <Wire.h> 
#include <RTClib.h> 

RTC_DS1307 rtc; 

void setup() {
   Serial.begin(115200); 
   Wire.begin(); 
   
}
void loop() 
{
   DateTime now = rtc.now(); 
   
   Serial.print(now.hour()); 
   Serial.print(":"); 
   Serial.print(now.minute()); 
   Serial.print(":"); 
   Serial.println(now.second()); 

delay(1000); 
}