What are the reporting requirements around day 90 and day 180 for expats in Thailand?

Expats in Thailand are required to report to immigration if they stay in the country for 90 consecutive days on certain visas like the DTV. This reporting can be done in person or by post, depending on the office. Required documents typically include your passport, a completed TM47 form, and other documents related to your visa. For those flying out before 90 days, a second report is not necessary. However, if reporting is done before day 90, a follow-up report is required. For day 180, specific procedures may apply depending on the situation.