What are the documents required to extend my Retirement Non O Visa and when should I apply for the extension?

To extend your Retirement Non O Visa, you need to understand that you are applying for an extension of stay rather than renewing the visa. The expiration date of your current permission to stay is located in your passport. You can apply for an extension when you have 30 days or less left at most immigration offices, and 45 days or less at some offices. Requirements for the extension may vary by immigration office, so it's advised to check with your local immigration office for the specific documentation needed.