Describe the setting of Schindler's List (when, what year, which century, place, country and season).

Most of the action of the book takes place in Krakow, Poland during WWII.  This would place it in the 20th Century.  There are various flashbacks in the lives of different characters but the majority of the action takes place in the autumn of 1943.  

At that point in history, the Germans had invaded Krakow and put the Jewish community there into ghettos.  A lot of the action of the novel takes place there as well as in Schindler's enamelware factory also in Krakow.

Later in the novel some of the action takes place in Plaszow a forced labour camp and in the camp which Schindler set up in Brinnlitz, Czechoslovakia.  Additionally there is a scene in the most famous concentration camp Auschwitz-Birkenau.