What is the duration of the webinars? July 27, 2021 12:15 Updated The webinars last about 1h, but it will also depend a bit on how the conversation goes and the questions you may have. Related articles How to book a webinar for CTC 101 What do I need to participate in a webinar for CTC 101? Where are the pictures for the Processing projects? Are the webinars compulsory to get the diploma?