Definition availableExact definition Candidate definition
Day
dcx:d · Time interval
1 d = 86400 s.
- Quantity kind
- Time interval
- SI dimension
T- Allowed roles
- Scalar
- Unit system / convention
- Accepted with SI
- Registry code
d
Scope and distinctions
Elapsed duration only. A calendar day across time-zone or daylight-saving transitions is a different operation.
Available operations
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Verification scope
New UUCE conversion paths have not been CVP-verified or production-attested. An exact unit definition is not a verification claim.
Candidate is a registry lifecycle state. It is not a completed review or CVP verification.
Definition sources
- BIPM — The International System of Units (SI)
9th edition, version 4.01, June 2026
Table 7 prefixes; Table 8: day = 24 h = 86400 s
Source checked:Definition metadata attributed to BIPM; brochure licensed CC BY 4.0.
Definition and registry versions
- Definition revision
- 1.0.0
- Registry snapshot
- 0.3.0-preview.3 · preview
- Definition lifecycle
- candidate
- Definition owner
- core.metrology
- Definition digest
dadbe8661bb63e31be589afc19c4b843e9e890d7ca87de6be7d65cafe3de887e- Definition dependency digest
2c4711ae40137c657227ff94f09867684b14878dd5254d88c3edffa002f61f86
Digests identify definition content; they are not CVP evidence or production attestations.