How long is the Khor Ror. 22 certificate valid in Thailand?

The Khor Ror. 22 certificate, which is used for marriage-related immigration processes in Thailand, is valid for a maximum of 60 days when presented at immigration. It can only be used once, meaning that if needed again after this period, one must obtain a new printout from the local Amphur. Generally, for marriage extensions, the certificate should not be older than a week at the time of application.