Unlike the Year Chart, the Day Chart uses the Hour Pillar as a secondary layer. The relationship between the Day Stem and the Hour Stem tells you:

The Qimen Day Chart has various applications in modern times, including:

If you sit in the Palace where the Day Stem resides, facing the direction of the Door of Opening, you align your personal bio-energy with the cosmos. This is called "Sitting the Day Star." CEOs of large companies in Asia often re-arrange their office seating daily based on the Day Chart’s Ming Tang.

The primary goal of a Day Chart is to find the "Right Time, Right Place, and Right People" for any activity.