MongoDB: Find users by creation date

gistfile1.js

db.users.find({created_at: {$gt: new ISODate('2015-03-29 00:53:55.997Z')}}).sort({_id: 1}).forEach(function(d) {
    var firstName = d.name.split(/\s+/)[0];
    var match = d.name.match(/.*\s+(.*)/);
    var lastName = match ? match[1] : '';
    print(d.email + '\t' + firstName + '\t' + lastName);
});