] In Northanger Abbey , Chapter 11, Catherine Morland has agreed to go walking with the Tilneys at 12:00. ... there's no indication that the Tilneys were at all uneasy about showing up over an hour late.

] So I'd like to know what the etiquette was back in the late 18th/early 19th century. What level of punctuality was expected? How late was too late for a meeting of this type?

...saying that she had waited for nearly an hour and how exceedingly sorry she was that the weather had obviously prevented the Tilneys from meeting her. But there was no word from her and thus Miss Tilney did not care to leave her card, pretending she had none with her. The additional rudeness if I understand Mr Tilney correctly, was that Catherine did nothing to greet him and his sister, when Mr Thorpe's chaise drove past them.