This kid (David Hogg) is recording off a phone with time and date on it so I doubt he got the time wrong especially since he is a "student journalist" having experience working at CNN and his mother is a CNN VIP. He is supposedly in a school where there are clocks on every wall. I seriously doubt (but leave room to be wrong) that the police kept these kids in the school on "lockdown" till 9:32 PM.

https:// squawker.org/analysis/lyinghogg/