GeorgiyZhuravlev

function getCountdown() {
  // diff in seconds, comes through function's params
  const diff = 60*60*24*4 + 60*60*22 + 60*35 + 5;
  const MINUTE = 60;
  const HOUR = MINUTE * 60;
  const DAY = HOUR * 24;

  const days = Math.floor(diff / DAY);
  const hDiff = diff % DAY;
  const hours = Math.floor(hDiff / HOUR);