Question

setting: what is the setting and how is it described?
what is odd about the clock striking 13?
winstons apartment building-
winstons own apartment-
where winston works-

Explanation:

For "What is odd about the clock striking 13?"

Standard clock systems (12 - hour or 24 - hour) don't have a 13th hour mark. Clocks typically strike up to 12 (for 12 - hour) or follow 24 - hour numbering but still don't strike 13 as a normal hour - marking strike, so it's odd as it deviates from conventional time - keeping and clock - striking norms.

In 1984, Winston’s apartment building (Victory Mansions) is described as dilapidated: the lifts (elevators) don't work, stairwells are shabby, there's a pervasive smell of boiled cabbage and old rag, and it's a place of squalor, reflecting the oppressive, decaying nature of the totalitarian society.

Winston’s own apartment is small, shabby, with a telescreen (for surveillance), peeling wallpaper, and a general air of squalor. It’s a space where he tries to find privacy (e.g., the corner where he writes in his diary) but is still under the Party’s watch, emphasizing the oppressive control.

Answer:

Clocks (in standard 12 - hour or 24 - hour systems) do not have a 13th hour for striking as a normal hour - related action, so the clock striking 13 deviates from conventional time - keeping and clock - striking practices.

For the setting - related questions (e.g., "Winston's Apartment Building - ", "Winston's own apartment - ", "Where Winston works - " assuming from 1984 context)

Winston's Apartment Building (from 1984 context)