What mood is established in the first paragraph of the story? What details and images help to create this mood? How does this mood create a certain expectation in the reader?

The story begins with odd, quasi-allegorical references to time. "On the third day of rain," "The world had been sad since Tuesday," and other statements conflate time, the weather and human emotion in a way that seems mythic and magical. On top of this, the world behaves strangely, supernaturally. The swarms of crabs that must be killed, the darkness at noon-these strange events seem to foreshadow the eerie arrival of the otherworldly visitor, the Angel.