Definition availableExact definition
Hour
hcx:h · Time interval
1 h = 3600 s.
- Quantity kind
- Time interval
- SI dimension
T- Allowed roles
- Scalar
Scope and distinctions
Exactly 3600 seconds of elapsed time; not civil-time or calendar arithmetic.
Available operations
No converter is linked for this definition yet. You can inspect the definition and its sources.
Verification scope
New UUCE conversion paths have not been CVP-verified or production-attested. An exact unit definition is not a verification claim.
Definition sources
- BIPM — The International System of Units (SI)
9th edition, version 4.01, June 2026
Section 4, Table 8: hour
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 0.1.0
- Registry snapshot
- 0.1.0-preview.1 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
4502c64d56d83add7b22ebe569b85d459c798ae635a506011e1918c004810f27- Definition dependency digest
53984e44b40608e6795cd945372e512e790968337de93b03100e6c397abbfeca
Digests identify definition content; they are not CVP evidence or production attestations.