The NLDATEw. informat reads the date value in the specified locale, and then converts the date value to the local SAS date value.

The NLDATEw. informat doesn't work correctly with a single digit day unless a space is inserted prior to the day value.

Operating System and Release Information

data;
  x=input('September 10, 2006',nldate18.);
  y=input('September 3, 2006',nldate17.);
  z=input('September  3, 2006',nldate18.);
  put x= y= z=;
run;

/* This is the log when the extra space isn't inserted before the 
   single digit day.
*/

133   data;
134    x=input('September 10, 2006',nldate18.);
135    y=input('September 3, 2006',nldate17.);
136    z=input('September  3, 2006',nldate18.);
137    put x= y= z=;
138  run;

NOTE: Invalid argument to function INPUT at line 135 column 13.
x=17054 y=. z=17047
x=17054 y=. z=17047 _ERROR_=1 _N_=1
NOTE: Mathematical operations could not be performed at the following places. The results of the
      operations have been set to missing values.


/* When the extra space is inserted prior  to the 3, this is the 
   log.
*/

x=17054 y=17047 z=17047