Which is more accurate, the perpetual calendar or the yellow calendar?

Both the perpetual calendar and the yellow calendar are accurate, but the functions of these two calendars are different. The perpetual calendar is mainly used to query the date, that is, to query the specific year, month, day and hour. The yellow calendar is used to choose auspicious days, that is, to choose auspicious days, and the perpetual calendar is used to check dates. Both calendars are accurate, but they have different uses.