Date format for 8/4/97, plus TRUNC('ww') question

1. Why does the date format 'fmMM' work as expected (yielding '8' today), but 'fmDD' does not (yielding '04')? Do I really have to do THIS to get the date to come out nicely?

TO_CHAR(some_date, 'Dy fmMM/') || LTRIM(TO_CHAR(some_date, 'DD/YY'), '0')

2. The reference book says TRUNC(some_date, 'ww') should always give a Monday. Mine always seems to give a Wednesday. Huh?

Thanks,
Kevin Received on Tue Aug 05 1997 - 00:00:00 CDT