# month (temporal)

a time of about thirty days that repeats each year

- Computed level: L13 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: temporal  ·  Arena: EmergenceLexicon

## Emergence
**Emerges from:** [days](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-days.temporal), [regular](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-regular.frequency), [repeats](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-repeats.action), [thirty](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-thirty.numeral), [time](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-time.dimension), [year](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-year.time)

**Through:** many days group together in a regular pattern to form a longer time span that recurs each year

**Novel properties:**
- recurrent duration
- intermediate timescale
- structured periodicity

## Examples
- The Gregorian calendar schedules February as a 28-day month, except in leap years when it has 29. *(institutions)*
- The billing cycle for electricity in Tokyo Electric Power Company repeats every 30 or 31 days without exception. *(economics)*
- NASA mission logs for Voyager 2 record data in monthly summaries since its 1977 launch. *(engineering)*

## Used by
- [april](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-april.month) (L14)
- [calendar](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-calendar.tool) (L14)
- [christmas](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-christmas.holiday) (L19)
- [december](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-december.date) (L14)
- [february](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-february.calendar) (L14)
- [july](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-july.temporal) (L15)
- [june](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-june.month) (L14)
- [november](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-november.date) (L15)
- [october](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-october.month) (L14)
- [september](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-september.calendar) (L14)

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