# due (expected)

something that is required to happen at a particular time

- Computed level: L9 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: adjective  ·  Arena: due

## Emergence
**Emerges from:** [time](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-time.dimension), [required](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-required.obligation), [happen](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-happen.event-occurrence), [particular](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-particular.specific)

**Through:** When a requirement is tied to a specific time, it creates an expected occurrence.

**Novel properties:**
- temporal expectation
- scheduled obligation
- specificity of timing

## Examples
- The International Space Station must dock with a Progress supply ship every 150 days or risk life-support failure. *(engineering)*
- Halley's Comet appears every 76 years, last in 1986, next due in 2061. *(astronomy)*
- The U.S. Constitution requires a presidential election every four years, next due in November 2024. *(institutions)*

## Used by
- [symmetry versus regularity licence](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-symmetry-versus-regularity-licence.licence) (L12)

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-due.expected*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-due.expected.json*  
*Every definition provably resolves to space, time, energy and pattern.*