@jmikola That didn't work. It takes microseconds but according to [this page](http://us1.php.net/manual/en/class.mongodate.php)

> MongoDB stores dates as milliseconds past the epoch. This means that dates do not contain timezone information. Timezones must be stored in a separate field if needed. Second, this means that any precision beyond milliseconds will be lost when the document is sent to/from the database.