The output of your command "ncal 2 1998" is:

    February 1998     
Su  1  8 15 22      
Mo  2  9 16 23      
Tu  3 10 17 24      
We  4 11 18 25      
Th  5 12 19 26      
Fr  6 13 20 27      
Sa  7 14 21 28