"The Home Ministry has decided to extend the date for submission of the application for registration as OCI card holder by the erstwhile PIO cardholders till December 31, 2017," an official said.
This was for the fourth time the date for conversion of PIO cards to OCI cards has been extended since March 31, 2016.
The PIO card was first implemented in 2002 as a benefit to foreign nationals who could establish at least a third generation tie to an Indian origin. The PIO card was valid for travel, work, and residence in India for a period of 15 years.
The OCI card was implemented in 2005, carried more benefits than the PIO card, and was valid for the holder's lifetime.