Practice shelf / fictional task

Paper clock

A fictional notebook exercise: a calendar prints a label for the next day. Think about the inputs you would choose to check it.

First observations

Write down which calendar convention the exercise assumes. Consider where adjacent dates differ in more than one printed field.

How would you tell a formatting mistake from a calculation mistake? What is the smallest set of observations that supports your explanation?

This page is an original fictional example, unrelated to any live evaluation.