How to create simple counter system using PHP

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Javascript

PHP

Hello people, im new here. I want to create simple event system using PHP lang, but im stuck a little. First, i need that counter for example: when visitor open event, on right side i put event start in xx:xx:xx. So time of begining event is stored into database. I have generate a little bit simple counter but i have a little problem in this code. I will post my code so i hope you will help me to resolve that.

What I have tried:

<div class="box-widget counter-widget gradient-bg" data-countDate="06/02/2020">
<div class="countdown fl-wrap">
<div class="countdown-item">
<span class="days rot">00</span>
<p>days</p>
</div>
<div class="countdown-item">
<span class="hours rot">05</span>
<p>hours</p>
</div>
<div class="countdown-item no-dec">
<span class="minutes rot2">46</span>
<p>minutes</p>
</div>
<div class="countdown-item-seconds">
<span class="seconds rot2">00</span>
</div>
</div>
</div>

Javascript code is:

if ($(".counter-widget").length > 0) {
    var countCurrent = $(".counter-widget").attr("data-countDate");
    $(".countdown").downCount({
        date: countCurrent ,
        offset: 0
    });
}

Problem is when i get time from database, and that events starts in 8h and 25min i get 116 days. And that is problem 116 days. I don't get where is my mistake.

06/02/2020

date is good. But they display me 116 days. Why?

Thanks all.