Can I apply for a one-year extension of my Non-Immigrant O-A visa in Thailand before my first year ends?

The user inquires about the timeline for applying for an extension on their Non-Immigrant O-A retirement visa, specifically if they can file for a one-year extension after the first year of stay has almost concluded. Responses clarify that the extension can be applied for before the initial one-year period ends, and it is advised to apply around July/August 2019. Additionally, it is important to note that a re-entry permit will be necessary if leaving the country after receiving the extension.