real time clock drifting off

var dg1 = A8;
var dg2 = B7;
var A = B14;
var B = B13;
var C = B10;
var D = B1;
var E = A7;
var F = A6;
var G = A5;
var DP =  B15;

function allClear() {
  digitalWrite(A , 0);
  digitalWrite(B , 0);
  digitalWrite(C , 0);
  digitalWrite(D , 0);
  digitalWrite(E , 0);
  digitalWrite(F , 0);
  digitalWrite(G , 0);
  digitalWrite(DP , 0);
  digitalWrite(A8, 1);
  digitalWrite(B7, 1);
}

/*
A little help?

            ----A----
            |       |
            F       B
            |       |
            ----G----
            |       |
            E       C
            |       |
            ----D----
*/

function one() {
  digitalWrite(F, 1);
  digitalWrite(E, 1);
}

function two() {
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(G, 1);
  digitalWrite(E, 1);
  digitalWrite(D, 1);
}

function three() {
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(G, 1);
  digitalWrite(C, 1);
  digitalWrite(D, 1);
}

function four() {
  digitalWrite(F, 1);
  digitalWrite(G, 1);
  digitalWrite(B, 1);
  digitalWrite(C, 1);
}

function five() {
  digitalWrite(A, 1);
  digitalWrite(F, 1);
  digitalWrite(G, 1);
  digitalWrite(C, 1);
  digitalWrite(D, 1);
}

function six() {
  digitalWrite(A, 1);
  digitalWrite(F, 1);
  digitalWrite(E, 1);
  digitalWrite(G, 1);
  digitalWrite(C, 1);
  digitalWrite(D, 1);
}

function seven() {
  digitalWrite(F, 1);
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(C, 1);
}

function eight() {
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(C, 1);
  digitalWrite(D, 1);
  digitalWrite(E, 1);
  digitalWrite(F, 1);
  digitalWrite(G, 1);
}

function nine() {
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(C, 1);
  digitalWrite(G, 1);
  digitalWrite(F, 1);
}

function zero() {
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(C, 1);
  digitalWrite(D, 1);
  digitalWrite(E, 1);
  digitalWrite(F, 1);
}

function aa() {
  digitalWrite(A, 1);
  digitalWrite(B, 1);
  digitalWrite(C, 1);
  digitalWrite(E, 1);
  digitalWrite(F, 1);
  digitalWrite(G, 1);
}

function bb() {
  digitalWrite(C, 1);
  digitalWrite(D, 1);
  digitalWrite(E, 1);
  digitalWrite(F, 1);
  digitalWrite(G, 1);
}

function cc() {
  digitalWrite(A, 1);
  digitalWrite(F, 1);
  digitalWrite(E, 1);
  digitalWrite(D, 1);

}

function data() {
  full=(new Date()).toString();
  words = full.split(' ');
  month = words[1];
  date = words[2];
  bigtime = words[4];
  small = words[4].split(':');
  hour = small[0];
  if (hour > 12) {
    hour = hour-12;
  }
  min = small[1];
}

/*
    digitalWrite(A8, 1);
    digitalWrite(B7, 0);
    three();
    allClear();
    digitalWrite(A8, 0);
    digitalWrite(B7, 1);
    five();
    allClear();
*/

function hourDriver() {
  data();
  switch (Number(hour)) {
    case 00:
    case 12:
      allClear();digitalWrite(A8, 0);
      cc();
      break;
    case 01:
      allClear();digitalWrite(A8, 0);
      one();
      break;
    case 02:
      allClear();digitalWrite(A8, 0);
      two();
      break;
    case 03:
      allClear();digitalWrite(A8, 0);
      three();
      break;
    case 04:
      allClear();digitalWrite(A8, 0);
      four();
      break;
    case 05:
      allClear();digitalWrite(A8, 0);
      five();
      break;
    case 06:
      allClear();digitalWrite(A8, 0);
      six();
      break;
    case 07:
      allClear();digitalWrite(A8, 0);
      seven();
      break;
    case 08:
      allClear();digitalWrite(A8, 0);
      eight();
      break;
    case 09:
      allClear();digitalWrite(A8, 0);
      nine();
      break;
    case 10:
      allClear();digitalWrite(A8, 0);
      aa();
      break;
    case 11:
      allClear();digitalWrite(A8, 0);
      bb();
      break;
  }
}

function minuteDriver() {
  data();
  switch(Number(min)) {
    case 00:
    case 01:
    case 02:
    case 03:
    case 04:
      allClear();digitalWrite(B7, 0);
      break;
    case 05:
    case 06:
    case 07:
    case 08:
    case 09:
      allClear();digitalWrite(B7, 0);
      digitalWrite(G, 1);
      break;
    case 10:
    case 11:
    case 12:
    case 13:
    case 14:
      allClear();digitalWrite(B7, 0);
      digitalWrite(F, 1);
      break;

    case 15:
    case 16:
    case 17:
    case 18:
    case 19:
      allClear();digitalWrite(B7, 0);
      digitalWrite(F, 1);
      digitalWrite(G, 1);
      break;

    case 20:
    case 21:
    case 22:
    case 23:
    case 24:
      allClear();digitalWrite(B7, 0);
      digitalWrite(A, 1);
      break;
    
    case 25:
    case 26:
    case 27:
    case 28:
    case 29:
      allClear();digitalWrite(B7, 0);
      digitalWrite(A, 1);
      digitalWrite(G, 1);
      break;
    
    case 30:
    case 31:
    case 32:
    case 33:
    case 34:
      allClear();digitalWrite(B7, 0);
      digitalWrite(B, 1);
      break;

    case 35:
    case 36:
    case 37:
    case 38:
    case 39:
      allClear();digitalWrite(B7, 0);
      digitalWrite(B, 1);
      digitalWrite(G, 1);
      break;
    
    case 40:
    case 41:
    case 42:
    case 43:
    case 44:
      allClear();digitalWrite(B7, 0);
      digitalWrite(C, 1);
      break;
    
    case 45:
    case 46:
    case 47:
    case 48:
    case 49:
      allClear();digitalWrite(B7, 0);
      digitalWrite(C, 1);
      digitalWrite(G, 1);
      break;
    
    case 50:
    case 51:
    case 52:
    case 53:
    case 54:
      allClear();digitalWrite(B7, 0);
      digitalWrite(D, 1);
      break;
    
    case 55:
    case 56:
    case 57:
    case 58:
    case 59:
      allClear();digitalWrite(B7, 0);
      digitalWrite(D, 1);
      digitalWrite(G, 1);
      break;
  }
}

function random(state) {
  
  if (state === true || state === 1) {
    clearTimeout();
    random();
  } else if (state === false || state === 0) {
    allClear();
    clearTimeout();
    setDeepSleep(1);
    return;
  }
  
  var what = Math.floor((Math.random() * 3));
  
  if (what === 0) {
    allClear();
  }
  else if (what == 1 || what == 2) {
    digitalWrite(A, Math.floor((Math.random() * 2)));
    digitalWrite(B, Math.floor((Math.random() * 2)));
    digitalWrite(C, Math.floor((Math.random() * 2)));
    digitalWrite(D, Math.floor((Math.random() * 2)));
    digitalWrite(E, Math.floor((Math.random() * 2)));
    digitalWrite(F, Math.floor((Math.random() * 2)));
    digitalWrite(G, Math.floor((Math.random() * 2)));
  }

  setTimeout(random, ((Math.random() * 1000) + 1));
  
}

function swirl() {
  for (delay=35;delay>0;delay=delay-2) {
    digitalWrite(B14, 0);
    digitalWrite(B13, 1);

      digitalPulse(A1, 1, delay);

    digitalWrite(B13, 0);
    digitalWrite(B10, 1);

      digitalPulse(A1, 1, delay);

    digitalWrite(B10, 0);
    digitalWrite(B1, 1);

      digitalPulse(A1, 1, delay);

    digitalWrite(B1, 0);
    digitalWrite(A7, 1);

      digitalPulse(A1, 1, delay);

    digitalWrite(A7, 0);
    digitalWrite(A6, 1);

      digitalPulse(A1, 1, delay);

    digitalWrite(A6, 0);
    digitalWrite(B14, 1);

      digitalPulse(A1, 1, delay);
  }
  digitalWrite(B14, 0);
  for (i=0;i<8;i++){
    digitalWrite(D, 0);
    digitalWrite(A, 1);
      digitalPulse(A1, 1, 90);
    digitalWrite(A, 0);
    digitalWrite(G, 1);
      digitalPulse(A1, 1, 90);
    digitalWrite(G, 0);
    digitalWrite(D, 1);
      digitalPulse(A1, 1, 90);
  }
}

//var l = false;
//setWatch( function(e) { l=!l; random(l);}, B8, {repeat:true, edge:'falling', debounce:100});

function onInit() {
  data();
  digitalWrite(A8,0);
  digitalWrite(B7,0);
  swirl();
  digitalWrite(D, 0);
  setDeepSleep(1);
}

pinMode(B8, 'input_pullup');
pinMode(B5, 'input_pullup');

setWatch(function (e) {
  data();
  for(i=0;i<60;i++){hourDriver();minuteDri­ver();}
  allClear();
  setDeepSleep(1);
}, B8, {edge:"falling", repeat:true, debounce:50});

/*
var state = false;
setWatch(function (e) {
  state=!state;
  random(state);
  setDeepSleep(1);
}, B5, {edge:"falling", repeat:true, debounce:50});
*/

setInterval(function(e) {
  data();
}, 1800000);

setDeepSleep(1);

save();