JSFiddle - React, Tailwind, and code Playground

JavaScript

var weekday = new Array(7);
weekday[0]=  "Sunday";
weekday[1] = "Monday";
weekday[2] = "Tuesday";
weekday[3] = "Wednesday";
weekday[4] = "Thursday";
weekday[5] = "Friday";
weekday[6] = "Saturday";

function formatDate(date) {
 var month = date.getUTCMonth() +1;
 var dayNumber = date.getUTCDate();
 var year = date.getUTCFullYear();
 var day = date.getUTCDay();
 return year + "-" + month + "-" + dayNumber + " " + weekday[day];
}

console.log(formatDate(new Date()));