SITE_URL = 'https://backlinkbook.com';
function createCookie(name, value, days) {
  var expires;

  if(days) {
    var date = new Date();
    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
    expires = "; expires=" + date.toGMTString();
  } else {
    expires = "";
  }
  document.cookie = encodeURIComponent(name) + "=" + encodeURIComponent(value) + expires + "; path=/";
}

function readCookie(name) {
  var nameEQ = encodeURIComponent(name) + "=";
  var ca = document.cookie.split(';');
  for (var i = 0; i < ca.length; i++) {
    var c = ca[i];
    while (c.charAt(0) === ' ')
      c = c.substring(1, c.length);
    if (c.indexOf(nameEQ) === 0)
      return decodeURIComponent(c.substring(nameEQ.length, c.length));
  }
  return null;
}

var tz = Intl.DateTimeFormat().resolvedOptions().timeZone;
if(readCookie('tz') != tz) {
  createCookie('tz', tz, 1);
}