What are you required to do on muster day?

Muster day is a once a year thing where they would take roll call of all the troops in the early 1700's

probably not

2,000 - 2,500

There is no absolute correct answer here as the Church is changing and growing along with society as a whole. Though many Catholics do fast at different times during the year, its not a requirement....

Pretty sure the notice comes on day 46 since you failed to the what you had to in the 45 days given.