Every time the lines crossing the middle line this is called a critical day.
The date of this day you can see just below the middle line. On these days
you should pay a little more attention to your life (if you believe it),
depending on the meaning of the line (look at the right side). If a line is in
the upper half of the chart this means positive energies. In the opposite, a
line in the lower part stands for the absence of these energies. For example,
on a day you feel you can get everything all the lines may be above the middle
and have one peak together.
Be aware of days there two or three lines are crossing together. On these days most people have enormous problems (also if they don't believe in it ;-).