Tex. Fam. Code § 5.103

The petitioning spouse may file the petition in a court of the county in which any portion of the property is located not earlier than the 60th day after the date of the occurrence of an event described by Sections 5.101(1)-(3) and 5.102(1)-(3) or not less than six months after the date the other spouse has been reported to be a prisoner of war or missing on public service.