An iCalendar with the PTP monthly calls is available at http://photran.cs.illinois.edu/ptp.ics.php. To subscribe...
- In Google Calendar, there should be an "Other Calendars" box on the left. In there, click Add > Add by URL.
- In Apple iCal, click Calendar > Subscribe, and enter the URL.
- Microsoft Outlook and Mozilla Lightning/Sunbird can also subscribe to Internet calendars.