# Calendar A major space for time-based notes. > [!info]- Canonical definition > This term is maintained in the [[vocab|PKM Vocabulary]] SKOS source, not here. > `pkmv:Calendar` · [term page](https://w3id.org/pkm/vocab/Calendar) · [Turtle](https://w3id.org/pkm/vocab/terms/Calendar.ttl) ## Scope - Scheduled events and sessions for time periods: Day, Week, Quarter, and Year. - Parent context for clusters of notes by time horizon. - Calendar is a major space for time-based linked notes in Obsidian Ideaverse vault in a PKM system, as well as a synced Neo4j subgraph within a PKM knowledge graph. - Supported by API routes, Python services, scripts, and agents, as well as Swift apps, intents, widgets, shortcuts, and Siri. - Also represented by Calendar and Fantastical apps. ## Broader - [[Calendar Folder (Term)|Calendar Folder]] — partitive (ISO 25964) ## Narrower - [[Day (Term)|Day]] - [[Decade (Term)|Decade]] - [[Month (Term)|Month]] - [[Quarter (Term)|Quarter]] - [[Time (Term)|Time]] - [[Week (Term)|Week]] - [[Year (Term)|Year]] --- #vocab/term · created 2026-08-25 · modified 2026-08-29