A meeting application can gather calendar information from a calendaring service, even if that calendaring service is independent from (e.g., a “third party to”) the meeting service. The meeting application can incorporate the calendar information into an in-meeting graphical user interface so that the calendar information can be displayed with the meeting. In some embodiments, this includes listing all invitees and participants alongside their associated acceptance status (e.g., are they present, did they accept, did they decline, etc.). In some embodiments, the calendar information can inform a meeting timer that can indicate the remaining time for the meeting. In some embodiments, the calendar information can inform individual timers that indicate how much time individual participants have before their next appointment.