JAVASCRIPT

epoch to date javascript

var myDate = new Date(1601528702*1000);
console.log(myDate.toLocaleString());

javascript today date in epoch

const start = Date.now(); 
/*gives the number of milliseconds elapsed since January 1, 1970 00:00:00 UTC.*/

convert date and time into epoch javascript

var someDate = new Date(dateString);
someDate = someDate.getTime();

javascript date epoch milliseconds

new Date().valueOf()