What causes Athena to be angry with
Arachne?

To quote www.mvorganizing.org, "in spite of being blessed with excellent weaving skills, Arachne was too arrogant. This made Athena furious because she was one of the best in weaving skills. She became angry at Arachne’s foolishness at the beginning of the story."

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: