zipdatamaps.com

timezone.js

var request = require('request');
var zip = '78733';
var url = 'http://www.zipdatamaps.com/' + zip; 
request(url, function (error, response, body) {
  if (error) console.log(error);
  
  //parse timezone
  var min = body.indexOf('blah');
  var max = body.indexOf('blah blah');
  var tz = body.substring(min, max);
  
  console.log('timezone', tz)
})