Arduino clock

//arduino clock by blogduino 30/09/2022



#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SH110X.h>
//fonts https://learn.adafruit.com/adafruit-gfx-graphics-library/using-fonts#step-2
#include <Fonts/FreeSerif9pt7b.h>
#include <RTClib.h>

#define i2c_Address 0x3c 
#define SCREEN_WIDTH 128 
#define SCREEN_HEIGHT 64 
#define OLED_RESET -1  
Adafruit_SH1106G display = Adafruit_SH1106G(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
RTC_DS3231 rtc;


int day;
int month;
int year;
int temperature;
String time;

void setup(void) {
  // put your setup code here, to run once:
Serial.begin(115200);
    delay(250);
    display.begin(i2c_Address, true);
     // SETUP RTC MODULE
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    while (true);
  }

  // automatically sets the RTC to the date & time on PC this sketch was compiled
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  time.reserve(1); // to avoid fragmenting memory when using String
  
  
}

void loop() {
  // put your main code here, to run repeatedly:


 DateTime now = rtc.now();

  time = "";
  time += now.hour();
  time += ':';
  time += now.minute();
  time += ':';
  time += now.second();
  
  day = now.day();
  month = now.month();
  year = now.year();
 temperature = rtc.getTemperature();

if(millis()%1000==0){
      display.clearDisplay();
      display.setTextSize(2);
      //display.setFont(&FreeSerif9pt7b);
      display.setTextColor(SH110X_WHITE);
      display.setCursor(20, 5);
      display.println(time);

      

      //Original Font
      display.setFont();
       display.setCursor(45, 25);
      display.println(temperature);
      display.setCursor(70, 25);
      display.println('c');
      display.setTextSize(2);
      display.setCursor(8, 45);
      display.println(day);
      display.setCursor(51,45);
      display.println(month);
      display.setCursor(79,45);
      display.println(year);
      display.setTextSize(3);
      display.setCursor(34,40);
      display.println('/');
      display.setCursor(62,40);
      display.println('/');
      
      display.display();
  
  }
}