7.5.2 IWEEK1/IWEEK2/IWEEK3

1.
Function
Determines the weekday number.
IWEEK1 : Determines the weekday number corresponding to a Type 1 date.
IWEEK2 : Determines the weekday number corresponding to a Type 2 date.
IWEEK3 : Determines the weekday number corresponding to a Type 3 date.
2.
Call
IWEEK1(IDATE)
IWEEK2(IY,ITD)
IWEEK3(IY,IM,ID)
3.
Explanation of Parameters
IDATE (I) Type 1 date.
IY (I) Year.
IM (I) Month.
ID (I) Day.
ITD (I) Serially-counted day.
IWEEK1 (I) Value of function that gives the weekday number corresponding to a Type 1 date.
IWEEK2 (I) Value of function that gives the weekday number corresponding to a Type 2 date.
IWEEK3 (I) Value of function that gives the weekday number corresponding to a Type 3 date.
4.
Notes
(a)
None