After attending a live conference event, you will complete an evaluation form. The date on the CE certificate will be the date of the live event.
By contrast, after you view a pre-recorded workshop, you will need to pass a quiz based on the content and complete an evaluation form. (These are required for "home study" CE offerings.) Once you do so, the date on the CE certificate will be the day that you passed the quiz and completed the evaluation form.
After you view the pre-recorded content, you will complete a CE evaluation form that includes some quiz questions. When you complete it successfully, the certificate will display the date on which you completed the form, not the date on which the video first became available or when you viewed it.