from datetime import datetime


def date2timestamp(date_time) -> int:
    """ convert date to millisecond timestamp

    :param date_time: 2020-06-28T11:46:53.539425Z
    :return timestamp: 1593316013539
    """
    TIME_FORMAT = '%Y-%m-%dT%H:%M:%S.%fZ'
    dt_utc = datetime.strptime(date_time, TIME_FORMAT)
    return int(dt_utc.timestamp() * 1000)