dialy cycle with street and builing light control

#define FASTLED_INTERNAL
#include <FastLED.h>

int num = 1;
int32_t interval = (int32_t) num * 100; /*num is an int, the calculation will done as an int and overflow.
  The (int32_t) casts (converts) to the larger type, so the result of the calculation
  fits and doesn't overflow.*/

#define NUM_LEDS 15 // NUMBER OF PIXELS IN THE USED STRIP
#define DATA_PIN 5
byte maxBrightness = 155; // VALUES FROM 0 - 255 -> THE HIGHER, THE MORE Amps NEEDED - FOR THE LED STRIPS
CRGB leds[NUM_LEDS];

#define streetLights 2
#define buildingLights 3
int32_t ledTimer = 0;
int32_t ledTimerUpdate = 0;



DEFINE_GRADIENT_PALETTE (AM_gp) { // Midnight To Noon (amCycle)
  0, 0, 0, 0, //black
  18, 0, 0, 0, //dark red
  56, 161, 83, 0, //orange
  115, 212, 202, 0, //dark yellow
  179, 255, 253, 213, //bright yellow
  255, 255, 255, 255, //white
};
DEFINE_GRADIENT_PALETTE (PM_gp) { // Noon to Midnight (pmCycle)
  0, 255, 255, 255, //white
  18, 255, 253, 213, //bright yellow
  56, 212, 202, 0, //dark yellow
  115, 161, 83, 0, //orange
  179, 98, 0, 0, //dark red
  255, 0, 0, 0 //black
};


void setup() {
  Serial.begin(9600);
  FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);
  pinMode(streetLights, OUTPUT);
  pinMode(buildingLights, OUTPUT);
}


uint8_t paletteIndex = 0;
CRGBPalette16 currentPalette = AM_gp;
uint8_t state = 0;   // 0 for AM, 1 for PM

void loop() {

  EVERY_N_MILLISECONDS(interval) {
    paletteIndex++;
    if (paletteIndex == 240) {
      paletteIndex = 0;
      state = 1 - state;
      currentPalette = state ? PM_gp : AM_gp;
    }
    CRGB color = ColorFromPalette(currentPalette, paletteIndex, maxBrightness, LINEARBLEND);
    fill_solid(leds, NUM_LEDS, color);
    FastLED.show();
      streetLightsRoutine();
      buildingLightsRoutine();
  }

}

//*************************************

void streetLightsRoutine() {
  int32_t localInterval = 2 * 240 * interval;
  int32_t localTimer = millis() % localInterval;
  if ((localTimer >= .25 * localInterval) && (localTimer <= .75 * localInterval)) {
    digitalWrite(streetLights, LOW);
  } else {
    digitalWrite(streetLights, HIGH);
  }
}
void buildingLightsRoutine() {
  int32_t localInterval = 2 * 240 * interval;
  int32_t localTimer = millis() % localInterval;
  if ((localTimer >= .5 * localInterval) && (localTimer <= .75 * localInterval)) {
    digitalWrite(buildingLights, HIGH);
  } else {
    digitalWrite(buildingLights, LOW);
  }
}