[Avodah] When was the Zohar Written?

[Prof. Levine]

R. Avraham Yari in his sefer Toldos Chag Simchas Torah comes to some 
interesting conclusions about when the Zohar was actually 
written.  His conclusions are based on when the name Simchas Torah 
was first used to designate the second day of Shemini Atzeres. See

http://www.stevens.edu/golem/llevine/rsrh/zohar_yaari.pdf

and, in particular, see what he writes on page 30.

Have a good Yom Tov.

YL