[Aevery_Freeman]

That was the first program I ever wrote for myself (on an Air Force computer).

Discovered that most didn't correctly count the days of someone born on a leap year but before the leap day.

It showed my wife's and myself were one day apart in our cycles.

We are coming up on our 50th wedding anniversary.

[alexander_busek]

That was the first program I ever wrote for myself (on an Air Force computer).

Me, too!

It was one of my first computer programs, ever: Written in BASIC, on about 30-40 punchcards.

It was at that point (in 9th grade) that I realized that the alleged "cycles" probably wouldn't be exact. For instance, if the 23-day physical cycle weren't exactly 23 days long, but actually, say, 23.01 days long, the change would compound over time. Same for the 28-day emotional cycle, and the 33-day intellectual cycle - the slightest deviation would result in a major shift within just a few years.

After all, e.g., menstrual cycles aren't all that regular, either.

Regards,