Your numbers.

A date is favourable when its digits reduce to your own number, or to one that is friendly with it. The weekdays your moolank rules are shaded underneath.

Every number in your date of birth, placed on the square, with your driver and conductor added. That is the convention the app uses. A number you have more than once is strong; one you are missing is the lesson.

The eight lines

Three rows, three columns and the two diagonals. A line whose three numbers are all present is a complete arrow, and it reads as a strength. One with a gap reads as the work to do.