Thanks for sharing your PF chronology.
But a few things seem to be missing -- some of them are a bit tricky, and
I'm not sure myself where (or when) they all should go:
one is John
Shade's illness* that precedes (or coincides with?) Kinbote's unusual descent
chez Sylvia;
another is the car crash that took the life of a mother and
child on a March night (but which March? and which mother and child? or doesn't
it matter?);
the birthday of Gradus (it coincides with Charles's -- this
is an easy one);
the death of Carolyn Lukin Shade (very
tricky);
and Sybil's retreat to Canada (another easy one);
and
finally John Shade's funeral (which does not take place in the
novel).
These are a few that popped out at me, and I wonder what you make
of them?
Carolyn
* and his possible hospitalization (but
this is in my opinion only)