When should I apply for a 30 day extension on my TR60 visa in Thailand, and what documents do I need?

To apply for a 30-day extension on your TR60 visa in Thailand, the best time is typically 30 to 45 days before your visa expires, depending on the immigration office. Some offices, like those in Bangkok, Chiang Mai, Phuket, and Buri Ram, allow applications up to 45 days prior, while others may only allow 30 days. You should check the specific requirements for your local office, as they may vary.