This clockface shows upcoming calendar events for the next rolling ~7 hours, rendered attractively on an arc. Event information is shown below the arc, and you can cycle forward or backward through the events by tapping on the right or left sides of the screen respectively.

In the settings, you can configure which calendars are shown on the clockface (none are selected by default), as well as whether to omit all-day and/or declined events.

Currently, up to 20 events can be shown as arcs at a time. This is an arbitrary but hard limit, due to the fact that you cannot programmatically create new elements using the Fitbit SDK. If this is an impractical limitation for anyone, let me know and I can increase the maximum number of events.

This is an open-source clockface (https://github.com/matthewwardrop/fitbit-agenda-arc-clockface), and contributions are welcome.