Safari new Date('2015-07-06') invalid date

parsedate.js

// Use moment to parse date to handle different browser
var startDate = moment('2015-07-06 08:00', 'YYYY-MM-DD HH:mm').toDate();
var timestamp = startDate.getTime();

console.log(timestamp);

// Output 
// 1436140800000

// Get Unix timestamp
var unixTimestamp = moment('2015-07-06 08:00', 'YYYY-MM-DD HH:mm').unix()
console.log(unixTimestamp);

// Output
// 1436140800