[Avodah] Birkas haChama

[Efraim Yawitz]

Since the Birkas ha-Chama is coming up next year, I'm wondering if
anyone has thought about the factual aspects of the subject.  As far
as I am aware, this 28-year cycle means absolutely nothing according
to modern astronomy (or even according to Ptolemaic astronomy).  Has
this been discussed before?  (Avodah/Arevim is not yet 28 years old,
and for that matter neither is the Internet as a popular tool.)

Kol Tuv,

Ephraim