Final answer:
The purpose of the quote in the story is to emphasize the importance of the date.
Step-by-step explanation:
The MOST LIKELY purpose of the quote in the story is to emphasize the importance of the date. The repetition of the date, 'Today is August 5, 2026,' shows that it holds significance in the story. This could indicate that something significant or pivotal happened on that date, or it could serve as a reminder to the characters and readers of a particular event or situation that they need to be aware of.