Last Update:
Copyright ©: Circle Software

This program was written to keep track of when a person can give a pint of blood again after giving one pint of blood, nothing more. The algorithm simply adds 56 days to the day the pint of blood was given and adjusts the year, month, and day to reflect the correct Month/Day/Year for the next date you will be allowed to give another pint of blood again.

If you notice a problem please email me with the original Date, MM/DD/YYYY and the calculated date, MM/DD/YYYY so I can duplicate the problem and correct the algorithm.

Phil Karras
email me

One pint of blood given on:
You can give blood again on:

Return to the: