Biorhythm Calculator

[Matt Agajanian]

Actually, I’ve figured out a way to extend the date range.

1901 becomes the start. For example, I was born in 1965 which is one year after a leap year, 1964. So, my birthdate becomes 1901. To expand on this, for example, 1966 becomes 1902, 1967 becomes 1903, 1968 becomes 1904, 1970 becomes 1902, 1971 becomes 1903, and so forth. I'm sure you see the pattern. Next, the year of the forecast date becomes 1902 plus your age at the forecast date. So, today, for example, as the forecast date is 1902+56 (my current age), thus, the forecast date for today is May 27, 1958.