expDate, err := time.Parse(time.RFC3339, dateStr)
	if err != nil {
		return errLifecycleInvalidDate
	}
	// Allow only date timestamp specifying midnight GMT
	hr, min, sec := expDate.Clock()
	nsec := expDate.Nanosecond()
	loc := expDate.Location()
	if !(hr == 0 && min == 0 && sec == 0 && nsec == 0 && loc.String() == time.UTC.String()) {
		return errLifecycleDateNotMidnight
	}

	*eDate = ExpirationDate{expDate}
	return nil
}