JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<button onClick="play_time();"> show Time </button>

JavaScript

function play_time() {
        var crntTime;
        var today = new Date();
        var formattedTime = today.getHours() + ":" + today.getMinutes() + ":" + today.getSeconds();
        var dd = today.getDate();
        var mm = today.getMonth() + 1;
        var yyyy = today.getFullYear();
        if (dd < 10) {
            dd = '0' + dd;
        }
        if (mm < 10) {
            mm = '0' + mm;
        }
        today = yyyy + '-' + mm + '-' + dd;
        var crntDatetime = `${today} ${formattedTime}`;
        crntTime = new Date(crntDatetime).getTime();

        var check = '2020-08-18 23:14:07';

        var gameTime = new Date(check).getTime();

        if (crntTime >= gameTime) {
            alert('Play');
        } else {
            alert('Later');
        }
    }