Be careful please! Entries are scheduled using in Coordinated Universal Time (UTC) but may be displayed in your local time zone. Look at individual calendar entries to be certain – downloading events to your calendar is helpful. To check, here is a time zone calculator.
Tutorial #4, X3D Ontology
November 11 @ 6:30 PM - 7:00 PM UTC
Please see X3D Ontology for Semantic Web Query of 3D Models and Metadata for more information.
Did you check the time zone? We hope to see you there!