def METHOD_NAME(current_time: str, ref_filename: str = None) -> dict:
    """
    slice data to separate in year, julian_day, month, day and hour in UTC
    """
    if ref_filename is not None:
        year, julian_day, hour_utc = extract_julian_day_and_hour_from_filename(
            ref_filename
        )
        month = None
        day = None
    else:
        year = current_time[:4]
        month = current_time[5:7]
        day = current_time[8:10]
        hour_utc = current_time[11:13]
        julian_day = dt.datetime.strptime(current_time, "%Y-%m-%d %H:%M:%S").strftime(
            "%j"
        )
    date_hour_info = {
        "year": str(year),
        "julian_day": str(julian_day),
        "month": str(month),
        "day": str(day),
        "hour_utc": str(hour_utc),
    }
    return date_hour_info