Thread for the gCalendar extension: http://extensions.pivotx.net/entry/67/gcalendar
With this extension you may embed one or more public Google Calendars in your PivotX website. You may combine up to 10 calendars in one view and have it shown as a day-, week-, months- or agenda-view. The extension is highly configurable. From the admin-screen or with parms you may alter size, colors, icons etc.