Evisse, in my second set of calculations I got four different possible years as follows
Using Isengar Took as the journeyer, and the day after Lithe in a non-Leap-Year: 2969
Using Pippin as the journeyer, and the non-Leap-Year date: 3158
Using Isengar and Leap-Year: 2969
Using Pippin and Leap-Year: 3157
I can't find any significant dates on the 27th of
any month in
any of those years.
Sophia