Give the session a stable identity beyond its start time
Begin with the event title, intended audience, start time, display timezone and the destination members use to open it. Decide how a recurring series differs from one session and which information changes when an organizer reschedules it. A member opening an older link should reach an agreed explanation or updated destination. Review the schedule on a compact screen with a long title and a session near a timezone boundary so the date and intended action remain understandable.
