From the C-span site, the event is scheduled to start at 10:45 am Eastern. I suspect the speech is some time after that.
Here-
March 3, 2015
Israeli Prime Minister Benjamin Netanyahu Address to Joint Meeting of Congress
Our coverage of Israeli Prime Minister Benjamin Netanyahu’s address to a joint meeting of Congress gets underway at 10:45 a.m.… read more
Bibi is in the Obama viper den now. I am praying for Bibi’s safety.
https://www.youtube.com/watch?v=0CzqrB7aQgs