#!/bin/ksh

for i in cur_weekday end_month pn_day pn_day_nr pn_month pn_weekday days_between; do . ./$i; done

for i in -9 -8 -7 0 3 4 5; do pn_month 200508 $i; done      

pn_month 200508 -835
pn_month 200508 -836

end_month 200501
end_month 200502

pn_day 20050102 -1
pn_day 20050102 -2
pn_day 20050102 -3

pn_day 17520902 +1
pn_day 17520914 -1

pn_day_nr 20050102 -1
pn_day_nr 20050102 -2
pn_day_nr 20050102 -3

pn_day_nr 17520902 +1
pn_day_nr 17520914 -1

cur_weekday 20050815
cur_weekday 17520914

pn_weekday +20050801 1 3

days_between 20050801 20061215
days_between 20061215 20050801