TY for posting. I didn't know they were going to do this, wish I had been there. Other than the centennial ranger talks starting on Thursday does anyone know about anything that is going on for Thursday and the weekend that is not listed in the Yosemite Guide? I found that the information on the Yosemite link for events is wrong. It says that there is a centennial ceremony on Thursday and more info is to come and I found out that there isn't one.