I found something very puzzling from a newspaper: "Chinese security agents in Sichuan Province detained Liao Yiwu, a prominent author and critic of the government, as he prepared to fly Monday to a literary festival in Germany, human rights activists said. It was the 13th time Mr. Liao had been prevented from leaving the coun
The writer is viewing it as the 13th. time in the period of the past up to that Monday. I wouldn't say that the Present Perfect would be wrong in the sentence, either.