What does expiration date of JN 17 mean?

The expiration date "JN 17" typically indicates that a product is set to expire in June 2017. The "JN" stands for the month of June, while "17" denotes the year 2017. This means that the product should be used or consumed by the end of June 2017 for safety and quality reasons. After this date, the product may not be as effective or could pose health risks.