date/time difference display

[altra22]

Hi, I am doing project to display difference between two dates in days/hours/min/sec.
using PIC16F876A ,DS1302 in c
My date is 3/3/1924 till this moment a count up timer.
the y2k problem still here  when you set the date you must set it in XX format (00-99) just 100 year

Code:

rtc_set_datetime(day,mth,year,dow,hour,min);

or DS1302 isn't suitable for my project ?
any help or sample code appreciated

Thanks in Advance

[zuisti]

Hi, I am doing project to display difference between two dates in days/hours/min/sec.
using PIC16F876A ,DS1302 in c
My date is 3/3/1924 till this moment a count up timer.
the y2k problem still here  when you set the date you must set it in XX format (00-99) just 100 year

Code:

rtc_set_datetime(day,mth,year,dow,hour,min);

Use an additional variable for centuries. For example:

Code:

If Year > 23 then
   Century = 19
else
   Century = 20
endif

If you calculate a difference between two dates in days, take the leap years into consideration !