js date to epoch seconds code example

Example 1: convert date and time into epoch javascript

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

Example 2: javascript getHours from epoch

function convert(t) {
  const dt = new Date(t);
  const hr = dt.getUTCHours();
  const m = "0" + dt.getUTCMinutes();
  
  return hr + ':' + m.substr(-2)
}

console.log(convert(1542895249079));
console.log(convert(1542897015049));
console.log(convert(1542902445344));