Century Months
How to calculate a Century month or get the year and month from a Century Month.
A century month is the number of months from January 1900.
To calculate the century month using example variables dobyr (date of birth year) and dobmon (date of birth month):
To calculate the year and month from an existing century month:
To calculate the century month using example variables dobyr (date of birth year) and dobmon (date of birth month):
dobcm = (dobyr-1900)*12 + dobmon;
To calculate the year and month from an existing century month:
dobyr = int((dobcm-1)/12) + 12;
dobmon = dobcm - ((dobyr-1900)*12);
