[Avodah] zman hadloko erev Shabbos and motzoei Shabbos

[Micha Berger]

On Tue, 26 Dec 2006 01:47:44 GMT, "kennethgmiller at juno.com" <kennethgmiller at juno.com> wrote:
> And I tend to feel that way too. But a thought just occurred to me:
> For purposes of Tal UMatar, we hold a solar year to be exactly 365.25
> days, even though Chazal knew it to be inaccurate. ...
>                                  Perhaps this is also RT's reasoning?
> For the great majority of the world, and for the great majority of
> the year, 72 clock minutes is more than enough time to insure that
> Tzeis has passed, so we use it in all cases for simplicity's sake.

It's one thing not to ask G-d on the correct dates for the season. Rain
doesn't go that exactly by the calendar anyway. Similarly when they
decided how often to say birkhas hachamah -- what's wrong with some
extra shevach because the sun and the earth and the day of the week are
only somewhat in alignment?

If you're speaking of issurim deRabbanan that misevara should be based
on the stars and they tell us to use an approximation, I would be
only slightly less comfortable.

However, doesn't this involve issurim deOraisa? Chazal can't give us a
lo pelug or lo daq that would lead people to violating a deOraisa.

Tir'u baTov!
-mi

-- 
Micha Berger             One who kills his inclination is as though he
micha at aishdas.org        brought an offering. But to bring an offering,
http://www.aishdas.org   you must know where to slaughter and what
Fax: (270) 514-1507      parts to offer.        - R' Simcha Zissel Ziv