Rick Allard

ID:2409
First Name:Rick
Last Name:Allard
Last Change:2017-07-08
Number of Files:1 (1,122nd most prolific)
Number of Downloads:22 (2,441st most downloaded)

Fertility Awareness   (details) 28 ENG   2KB/1KB
This program calculates when to avoid pregnancy by counting days and considering the length of recent months. The algorithm is common, see the book Contraceptive Technologies by Robert A. Hatcher for example; the code for Julian dates is from Stephen Luse.
By Rick Allard. 2017/07/08

Part of the HP Calculator Archive,
Copyright 1997-2017 Eric Rechlin.