I have a non immigrant O visa based on marriage to a Thai.
It expires on 14 Jan but it looks like I may have to be out of the country until mid Jan 2024. Can I apply for the extension up to the expiration date or do I have to start the process a certain time before expiry?
I realise 14 Jan is a Sunday so could I turn up at CNX immigration on 12 Jan with my paperwork and apply?
Is there a grace period after expiry?
Thanks in advance.