#include <DS3231_Simple.h>

DS3231_Simple Clock;

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void setup() {

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  Serial.begin(9600);

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  Clock.begin();

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  Serial.println();

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  Serial.println();

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}

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void loop()

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{

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  // Create a variable to hold the data

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  DateTime MyTimestamp;

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  // Load it with the date and time you want to set, for example

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  //   Saturday the 3rd of October 2020 at 14:17 and 33 Seconds…

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  MyTimestamp.Day    = 3;

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  MyTimestamp.Month  = 10;

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  MyTimestamp.Year   = 20;

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  MyTimestamp.Hour   = 14;

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  MyTimestamp.Minute = 17;

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  MyTimestamp.Second = 33;

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  // Then write it to the clock

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  Clock.write(MyTimestamp);

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  // And use it, we will read it back for example… 

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  Serial.print(« The time has been set to: « );

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  Clock.printTo(Serial);

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  Serial.println();

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  // Remember, once you set the time, the clock remembers it and keeps

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  // running even if you reset or turn off your Arduino, as long as

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  // the clock has battery power.

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  Serial.print(« End Of Program (RESET to run again) »);

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  while(1);

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}