Singapore Airlines scam counter logic

singapore-airlines-scam-counter-logic.js

var zeit = new Date();

var sec = zeit.getSeconds();

if (sec < 6 ){
    sec = 9
}

if (sec > 5 & sec < 13 ){
    sec = 8
}

 if (sec > 11 & sec < 19 ){
    sec = 7
}

 if (sec > 17 & sec < 25 ){
    sec = 6
}

 if (sec > 23 & sec < 31 ){
    sec = 5
}

 if (sec > 29 & sec < 37 ){
    sec = 4
}

if (sec > 35 & sec < 43 ){
    sec = 3
}

if (sec > 41 & sec < 49 ){
    sec = 2
}

if (sec > 47 & sec < 55 ){
    sec = 1
}

if (sec > 54){
    sec=0
};


var add = sec;

var zeit2 = new Date();

var minute = zeit2.getMinutes();

var timer1 = (60-minute)*60;

if (timer1 > 1800) {
   var resttimer = (30-minute)*10
} else {
   var resttimer = (60-minute)*10
};

var timer = resttimer + add + 67;

function updateTimer() {
  timer--;
    $("#gutschein").text(timer);

    if (timer < 9) {
        stopFunction();
    }
}

var myTimer = window.setInterval(updateTimer, 6000);

function stopFunction() {
    window.clearInterval(myTimer);
}