What do auspicious days in the wealth calendar represent? There are also black circles, blue circles and red circles. Can you explain it in detail

It's an auspicious day, and now it's common for everyone. I think there are many things that people don't understand and don't know what those things mean. For example: Shopping: Click Shopping, and you will jump to the search results page of the auspicious day of the zodiac. The black circle represents that the auspicious day of the zodiac has passed. Red circle: it stands for auspicious day, but it hasn't passed yet. Remember to catch it. There are also representatives of the coexistence of blue and red: blue indicates the current time, and red indicates that today is an auspicious day. If you do something on an auspicious day, you will have a great chance of success. So seize this auspicious day.