As Olivia serves flapjack at the dinner table, it is simultaneously dark night time outside the side window, and bright daylight outside the front door windows.
Although this episode takes place in 1933, the radio broadcast the family is listening to at 22:20 ("Have we found our happy valley?") is President Franklin Roosevelt's second inaugural address, given on January 20, 1937.
Such a fuss about this calf, which makes for a nice story, but then he is never seen again? He could have been a breeder for extra money. But he just disappeared.