Passage: The cockpit voice recorder began recording the final 30 minutes of Flight 93 at 09:31:57. At this moment, it recorded Jarrah announcing, "Ladies and gentlemen: here the captain. Please sit down, keep remaining seating. We have a bomb on board. So sit." The controller understood the transmission, but responded, "Calling Cleveland center, you're unreadable. Say again, slowly." The cockpit recording captured Dahl moaning and Jarrah telling him in English to sit down and to stop touching something (presumably the controls); Jason Dahl's wife, Sandy Dahl, listening to the cockpit voice recorder, commented that Jarrah "was fussing at my husband...he was speaking in English, and he spoke Arabic anytime he was talking with the other hijackers. Jason made moaning sounds after that. It sounded like he was trying to mess with stuff or get up, because the hijacker pilot kept telling him to stop and to sit down."A woman, presumably first-class flight attendant Debbie Welsh, is heard being held captive in the background and is heard struggling with the hijackers and pleading, "Please, please, don't hurt me". Unable to engage the autopilot, Jarrah turned the plane and headed east at 09:35:09. The aircraft ascended to 40,700 feet (12,400 m) and air traffic controllers immediately moved several aircraft out of Flight 93's flightpath. The woman in the cockpit is heard to say, "I don't want to die, I don't want to die" before being killed or otherwise silenced, followed by one of the hijackers saying in Arabic, "Everything is fine. I finished."At 09:39, two minutes after Flight 77 impacted the Pentagon, air traffic controllers overheard Jarrah say, "Ah, here's the captain: I would like you all to remain seated. We have a bomb aboard, and we are going back to the airport, and we have our demands. So please remain quiet." Air traffic controllers did not hear from the flight again. Passengers and crew began making phone calls to officials and family members starting at 09:30 using GTE airphones and mobile phones. Altogether, the...

Question: When did he finished?
09:39