Final answer:
A PT license expires at 12am on the last day of the licensee's birth month, meaning the license is valid until midnight of the last day in the month they were born.
Step-by-step explanation:
When it comes to license expiry for a Physical Therapist (PT), the expiration typically occurs at 12am on the last day of the licensee's birth month. To clarify, this means that if a PT's birth month is March, their license would expire as March ends and April begins. The time designation '12 am' refers to midnight, marking the start of a new day. Therefore, indicating that the license is valid till the very last minute of the birth month. Understanding the distinction between AM and PM, as well as how time conversions work, is crucial in interpreting license expiration dates correctly. In this context, AM stands for ante meridiem, which means 'before midday', and PM stands for post meridiem, which translates to 'after midday'.