[Avodah] If Asara B’Teives would fall on Saturday, the fast would be observed on Shabbos

[Zev Sero]

I very much doubt it.  It's all very well for the Avudraham to posit 
this as an academic exercise, but if it were actually possible for it to 
happen then I'm reasonably confident nobody would actually pasken that 
way. Only because it's an impossible hypothetical do we amuse ourselves 
by playing with the idea.

Until the modern calendar was established in the mid-4th century CE, the 
tenth *could* fall on Shabbos, and yet there is no mention in the mishna 
or gemara of such a halacha.  Also the Rambam, who lays down the halacha 
for all times, not just modern times, mentions nothing of this.  He 
doesn't even bother ruling against it; the idea that it could be so 
simply never arises.


-- 
Zev Sero            Wishing everyone a *healthy* and happy 5781
zev at sero.name       "May this year and its curses end
                      May a new year and its blessings begin"