def METHOD_NAME(value, to_tz):
    """
    Takes a timezone-naive datetime representing a UTC time
    returns a timezone-aware datetime localized to to_tz
    """
    to_tz = _soft_assert_tz_not_string(to_tz)
    assert value.tzinfo is None
    return pytz.utc.localize(value).astimezone(to_tz)