RTC Changing Time

I have the button set up and working but I just don't know how to make it add 1 hour.

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

RTC_DS1307 RTC;             


#define LED_Loop 60
#define PIN 8    


Adafruit_NeoPixel strip = Adafruit_NeoPixel(LED_Loop, PIN, NEO_GRB + NEO_KHZ800);
const int ButtonPin1 = 9;
int LED[LED_Loop];
int THREE = (LED_Loop / 4);
int SIX = (THREE * 2);
int NINE = (THREE * 3);
int TWELVE = (LED_Loop-1);

int HR_Fade = 7;
int MN_Fade;

long HR_Colour;
long SE_Colour = 0x000055;

long THIS_LED;
int Led_Flag;
int argh;

int HR_R;
int HR_G;
int HR_B;

int HR1_R = 0x55;
int HR1_G = 0;
int HR1_B = 0;

int HR2_R = 0x0D;
int HR2_G = 0;
int HR2_B = 0x0D;

int MN_R = 0;
int MN_G = 33;
int MN_B = 0;

//int SE_R = 0;
//int SE_G = 0;
//int SE_B = 0x55;

int hour_led;
int minute_led;
int second_led;
int new_minute;

void setup() 
{
  pinMode (ButtonPin1, INPUT);
  
  delay(2000);          
  Serial.begin(9600);
  Serial.println("-------------------------------");
  Serial.println("Setting up");
  
  Wire.begin();
  strip.begin();
  strip.show();


  if (! RTC.isrunning()) 
  {
    Serial.println("RTC is NOT running!");
    RTC.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  Serial.println("Done setting up");
  Serial.println("-------------------------------");
}

void loop() 
{
  int ButtonState = 0;
  

  ButtonState = digitalRead(ButtonPin1);
   DateTime now = RTC.now();
   
   strip.show();
   
   int hr = now.hour();
  
      
      
    
    
 
   if (hr < 12)
   {
     HR_R = HR1_R;
     HR_G = HR1_G;
     HR_B = HR1_B;
   }
   else
   {
     HR_R = HR2_R;
     HR_G = HR2_G;
     HR_B = HR2_B;
   }
   
   int mins = now.minute();        
   second_led = now.second();


   hour_led = (((LED_Loop/12) * hr) + (mins / (LED_Loop/5)))%LED_Loop;
   if (hour_led == 60)
   {
     hour_led = 59;
   }

   minute_led = mins;


   strip.setPixelColor(second_led-1,SE_Colour/2);
   strip.setPixelColor(second_led-2,SE_Colour/4);
   strip.setPixelColor(second_led-3,SE_Colour/8);
   strip.setPixelColor(second_led-4,SE_Colour/16);
   strip.setPixelColor(second_led-5,0);




   if (second_led == 0)
   {
      strip.setPixelColor(LED_Loop-1, SE_Colour/2);
      strip.setPixelColor(LED_Loop-2,SE_Colour/4);
      strip.setPixelColor(LED_Loop-3,SE_Colour/8);
      strip.setPixelColor(LED_Loop-4,SE_Colour/16);
      strip.setPixelColor(LED_Loop-5,0);
      new_minute = 1;
   }
   if (second_led == 1)
   {
      strip.setPixelColor(second_led-1, SE_Colour/2);
      strip.setPixelColor(LED_Loop-1, SE_Colour/4);
      strip.setPixelColor(LED_Loop-2,SE_Colour/8);
      strip.setPixelColor(LED_Loop-3,SE_Colour/16);
      strip.setPixelColor(LED_Loop-4,0);
   }
   if (second_led == 2)
   {
      strip.setPixelColor(second_led-1, SE_Colour/2);
      strip.setPixelColor(second_led-2, SE_Colour/4);
      strip.setPixelColor(LED_Loop-1, SE_Colour/8);
      strip.setPixelColor(LED_Loop-2,SE_Colour/16);
      strip.setPixelColor(LED_Loop-3,0);
   }
   if (second_led == 3)
   {
      strip.setPixelColor(second_led-1, SE_Colour/2);
      strip.setPixelColor(second_led-2, SE_Colour/4);
      strip.setPixelColor(second_led-3, SE_Colour/8);
      strip.setPixelColor(LED_Loop-1,SE_Colour/16);
      strip.setPixelColor(LED_Loop-2,0);
   }
   if (second_led == 4)
   {
      strip.setPixelColor(second_led-1, SE_Colour/2);
      strip.setPixelColor(second_led-2, SE_Colour/4);
      strip.setPixelColor(second_led-3, SE_Colour/8);
      strip.setPixelColor(second_led-4,SE_Colour/16);
      strip.setPixelColor(LED_Loop-1,0);
   }

   strip.setPixelColor(second_led,SE_Colour);

   if (new_minute == 1)

   strip.setPixelColor(minute_led,MN_R,MN_G,MN_B);
   strip.setPixelColor(minute_led+1, MN_R,     (MN_G * (second_led*10/6)/100)      , MN_B);
   strip.setPixelColor(minute_led-1, MN_R,     (MN_G * (100-(second_led*10/6))/100)      , MN_B);
   strip.setPixelColor(hour_led,HR_R,HR_G,HR_B);
   strip.setPixelColor((hour_led-1)%LED_Loop,HR_R/HR_Fade,HR_G,HR_B/HR_Fade);
   strip.setPixelColor((hour_led+1)%LED_Loop,HR_R/HR_Fade,HR_G,HR_B/HR_Fade);

   if (second_led > minute_led)
   {
     new_minute = 0;
   }



  
 
  
  strip.show();
  
  
}