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date 

        # Gem::Specification.date

(from ruby core)
### Implementation from Specification
---
    date()

---

The date this gem was created.

If SOURCE_DATE_EPOCH is set as an environment variable, use that to
support reproducible builds; otherwise, default to the current UTC date.

Details on SOURCE_DATE_EPOCH:
https://reproducible-builds.org/specs/source-date-epoch/

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