On 2/18/07, Galsaba@aol.com <Galsaba@aol.com> wrote:
> I know that Pesach will not fall in BDU, but I dont know if
> this automaticlly happens as a result of not havig Rosh Hashana
> on Sunday, Wed, Friday. Is at a result? or needs to be taken
> seperaltly?

It is a result of TWO factors: The days on which Rosh Hashana cannot 
fall, and the fixed number of days in the months.

There was a point in history when "lo BDU Pesach" did not yet apply, 
and I was told that this was because although Lo ADU Rosh was already 
in force, the lengths of the months were still variable. Evidence for 
this can be seen in non-Jewish religious writings, according to which 
a certain false Moshiach was executed on a Friday which was also the 
first day of Pesach.

Akiva Miller