format: "(?P<year>[0-9]{1,4})/(?P<month>[0-9]{1,2})/(?P<day>[0-9]{1,2}) (?P<hour>[0-9]{1,2}):(?P<minute>[0-9]{1,2}):(?P<seconds>[0-9]{1,2}).((?P<milliseconds>[0-9]{1,3})|(?P<microseconds>[0-9]{1,6}))(?P<offset>[+-])((?P<timezone_hour>[0-9]{1,2}):(?P<timezone_minute>[0-9]{1,2}))"