The dates are real, the events are not... well, except when fictional characters participate in real events, then the events ARE real, you know, sort of, but not really, because they're different than the actual event.
The Diary Of Alonzo Typer1938Literature | Source Timeline Mr. Typer's diary - a book about 6 × 3½ inches in size, with tough paper and an oddly durable binding of thin sheet metal - is discovered in the possession of one of the decadent Chorazin villagers by a state policeman sent to investigate the rumoured collapse of the deserted van der Heyl mansion.