Creating Arduino Word Clock

#include <Wire.h>
#include <DS3231.h>
#include <FastLED.h>

#define LED_PIN     5
#define NUM_LEDS    64
#define BRIGHTNESS  80
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];

DS3231 clock;
RTCDateTime dt;

int minutes;
int hours;
int CurrentTime[4];
int PreviousTime[4];
int ColorMinutes;
int ColorPastTo;
int ColorHour;

int Time_Comp[19][7]{ {62,59,56,99,99,99,99},
                      {48,49,62,99,99,99,99},
                      {44,43,42,41,40,99,99},
                      {63,62,61,60,99,99,99},
                      {32,33,34,35,99,99,99},
                      {47,46,45,99,99,99,99},
                      {47,52,53,54,55,99,99},
                      {35,36,37,38,39,99,99},
                      {59,58,57,56,99,99,99},
                      {39,40,55,99,99,99,99},
                      {50,51,52,53,54,55,99},
                      {48,49,50,51,53,54,99},
                      {30,29,28,27,99,99,99}, 
                      {27,26,99,99,99,99,99},              
                      {16,17,18,19,99,99,99}, 
                      { 1, 3, 4,99,99,99,99}, 
                      {15,14,13,12,11,10, 9}, 
                      { 1, 2, 3, 4, 5, 6,99},
                      {20,21,22,23,99,99,99}};


CRGB Colors[11]{CRGB::Chartreuse,CRGB::Orange,CRGB::BlueViolet,CRGB::Red,CRGB::Cyan,CRGB::Pink,
                CRGB::Green,CRGB::Purple,CRGB::Yellow,CRGB::White,CRGB::Blue};


void LitAll(){
  for(int i=0;i<=80;i++){
  LEDS.setBrightness(i);  
  FastLED.show();
  delay(120-i);
 }
}

void DimAll(){
  for(int i=80;i>=0;i--){
    LEDS.setBrightness(i);
    FastLED.show();
    delay(60);
  }
}

void setup() {
    Serial.begin(9600);
    clock.begin();
    //clock.setDateTime(__DATE__, __TIME__);
    delay( 3000 ); // power-up safety delay
    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.setBrightness(  BRIGHTNESS );
    
}

void loop(){

  PreviousTime[0]=CurrentTime[0];
  PreviousTime[1]=CurrentTime[1];
  PreviousTime[2]=CurrentTime[2];
  PreviousTime[3]=CurrentTime[3];

  dt = clock.getDateTime();
  minutes=int((dt.minute)/5)*5;
  if (minutes<35 and minutes>=0) hours=dt.hour ;else hours=dt.hour+1 ;
  if (minutes==0)                      {CurrentTime[0]=99;CurrentTime[1]=99;}
  if ((minutes==5)  or (minutes==55))  {CurrentTime[0]=14;CurrentTime[1]=99;}
  if ((minutes==10) or (minutes==50))  {CurrentTime[0]=15;CurrentTime[1]=99;}
  if ((minutes==15) or (minutes==45))  {CurrentTime[0]=16;CurrentTime[1]=99;}
  if ((minutes==20) or (minutes==40))  {CurrentTime[0]=17;CurrentTime[1]=99;}
  if ((minutes==25) or (minutes==35))  {CurrentTime[0]=17;CurrentTime[1]=14;}
  if (minutes==30)                     {CurrentTime[0]=18;CurrentTime[1]=99;}  
  if (minutes>= 5 and minutes<35)  CurrentTime[2]=12; 
  if (minutes>=35 and minutes<=59) CurrentTime[2]=13;
  if (minutes==0)   CurrentTime[2]=99;
  CurrentTime[3]=hours - int(hours/12)*12-1; 
  if (CurrentTime[3]<0) CurrentTime[3]=CurrentTime[3]+12;
  
  if (PreviousTime[0]!=CurrentTime[0]or PreviousTime[1]!=CurrentTime[1]) {

  DimAll();
  delay(2000);
  
  if (PreviousTime[0]!=99) for (int j=0;j<7;j++) leds[Time_Comp[PreviousTime[0]][j]]=CHSV( 0 , 0, 0); 
  if (PreviousTime[1]!=99) for (int j=0;j<7;j++) leds[Time_Comp[PreviousTime[1]][j]]=CHSV( 0 , 0, 0);
  if (PreviousTime[2]!=99) for (int j=0;j<7;j++) leds[Time_Comp[PreviousTime[2]][j]]=CHSV( 0 , 0, 0); 
  if (PreviousTime[3]!=99) for (int j=0;j<7;j++) leds[Time_Comp[PreviousTime[3]][j]]=CHSV( 0 , 0, 0);
  
  ColorMinutes=random(0,10);
  if (CurrentTime[0]!=99) for (int j=0;j<7;j++) leds[Time_Comp[CurrentTime[0]][j]]=Colors[ColorMinutes];
  if (CurrentTime[1]!=99) for (int j=0;j<7;j++) leds[Time_Comp[CurrentTime[1]][j]]=Colors[ColorMinutes]; 
  
  ColorPastTo=random(0,10);
  while (ColorPastTo==ColorMinutes){
    ColorPastTo=random(0,10);
  } 
  if (CurrentTime[2]!=99) for (int j=0;j<7;j++) leds[Time_Comp[CurrentTime[2]][j]]=Colors[ColorPastTo]; 
  
  ColorHour=random(0,10);
  while ( ColorHour==ColorPastTo or ColorHour==ColorMinutes ){
    ColorHour=random(0,10);
  } 
  for (int j=0;j<7;j++) leds[Time_Comp[CurrentTime[3]][j]]=Colors[ColorHour];
  //FastLED.show();       
  LitAll();

 }
}