For all the accusations against Hal Lindsey, I must admit that every time I have ever watched and listened to his show, I never have found him to go over the edge on date setting.
I observe him dutifully watching, and when he interprets current events based upon His Word, and then expresses joy in events leading to the Second Coming, I really don;t find any fault in his positions.
On the contrary, with the resources available to him, if he didn’t share with his watchers/listeners the observations he makes, one could accuse him of not performing with the spiritual gifts God may have given him.