Description: Enter the Year, Month and Date that you were born in the three boxes (tab keys will not work, so you must click in each box), then click on the Calculate button. Your cycles will appear on the chart, a dark BOLD line indicates today's date, and then 30 days after today's date appear on the chart. Red/blue lines indicate weekend days. Transition (critical) days occur whenever a cycle crosses the dark HORIZON line that runs from left to right across the middle of the chart. After clicking on Calculate your biorhythms will appear as well as the number of days you have lived at the top of the chart. You can selectively turn off the Physical, Emotional or Intelletual lines at this point by clicking the checkboxes at the upper right of the chart.