If you're hosting, presenting, or moderating a presentation, you can see a countdown timer in the top left of the presentation. You will also receive a reminder to wrap up your presentation when you have less than five minutes left until the scheduled end time, and another when you have less than one minute left. Attendees won't see the countdown or reminders.
To check the scheduled presentation time for a future webinar, access the webinar site and click View full details. The date and time will be listed under the presentation's title.