#include <RTClib.h>
RTC_DS1307 rtc;
char daysOfTheWeek[7][12]={"sunday","monday","tuesday","wednesday","thursday","friday","saturday"};
void setup() 
{
  Serial.begin(115200);
  if(! rtc.begin())
  {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }
}
void loop() 
{
  DateTime now = rtc.now();
  Serial.print("Current time");
  Serial.print(now.year(),DEC);
  Serial.print('/');
  Serial.print(now.month(),DEC);
  Serial.print("(");
  Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
  Serial.print(")");
  Serial.print(now.hour(), DEC);
  Serial.print(':');
  Serial.print(now.minute(), DEC);
  Serial.print(':');
  Serial.println(now.second(), DEC);
  delay(1000);
}
GND5VSDASCLSQWRTCDS1307+
NOCOMNCVCCGNDINLED1PWRRelay Module
NOCOMNCVCCGNDINLED1PWRRelay Module
NOCOMNCVCCGNDINLED1PWRRelay Module
NOCOMNCVCCGNDINLED1PWRRelay Module