When can I apply to extend my 60-day visa in Thailand if my stay exceeds the allowed duration?

A user inquired about extending their 60-day visa in Thailand, as they were staying beyond the allowed duration. Community responses clarified that the timing to apply for an extension varies by immigration office, with most allowing applications when there are 30 days or less remaining on the current visa. Some locations, like Koh Samui and Jomtien, restrict applications to the last week of the visa's validity. It's crucial for visa holders to check local office rules, as policies can differ significantly.