Zones is a slide rule that is useful for planning and scheduling events, taking into account offsets that change with the seasons and attendees' preferred times.
The Federated Wiki - Zones Pluging, type: zones, extends the markup of the federated wiki. github 
How-to install the zones Plugin? See the How-to Install the Zones Plugin page
A further dimension remains to be defined in the framing of a curriculum of making a living economy. The three ‘weft’ landscapes §1 §2 §3 give traction on the material structure of economy, and of practice per se. But considering formaciòn - the skilful production of *formations* of activist practice, within skilfully conducted activist lives (yes, we have just the one; and the clock ticks; and all is emergent in a *life*, as distinct from in *society*) - we need also to have a framing of what, in contrast with structure, is usually called agency.