Javascript function to show an element only during a specific time, depends on jQuery

showCkutStream.js

// Initialize some variables - we will use GMT times
var checkDate = new Date();
var offTheHourStarts = 21;
var offTheHourEnds = 22;

// Adjust for Daylight savings
if ((checkDate.getMonth() < 2 && checkDate.getMonth() > 10) || (checkDate.getMonth() == 2 && checkDate.getDate()-checkDate.getDay() > 7 ) || (checkDate.getMonth() == 10 && checkDate.getDate()-checkDate.getDay() > 1)) {
  offTheHourStarts--;
  offTheHourEnds--;
}

/**
 * Create a function to display the ckut stream if we are in the right hours
 */
function showCkutStream = function (context) {
  var timeDate = new Date();
  if (offTheHourStarts < timeDate.getHours()+timeDate.getTimezoneOffset()/60 > offTheHourEnds) {
    $('#ckutStream').show();
  }
  else {
    $('#ckutStream').hide();
  }
};

/**
 * Run the display function every minute
 */
$(document).ready( function() {
  $(this).setInterval("showCkutStream()", 60000);
});

Can this be used to showcase a certain video embed code at a certain hour - i.e 7pm EST? - should one replace '#ckutStream' - with such code?