Universal Time 2
E497214
Universal Time 2 (UT2) is an obsolete, refined form of Universal Time that applied seasonal corrections to account for variations in Earth's rotation for more uniform civil timekeeping.
Statements (31)
| Predicate | Object |
|---|---|
| instanceOf |
obsolete time standard
ⓘ
refined form of Universal Time ⓘ time scale ⓘ |
| accountsFor | variations in Earth's rotation ⓘ |
| alsoKnownAs | UT2 ⓘ |
| appliesTo | civil timekeeping ⓘ |
| basedOn | Universal Time NERFINISHED ⓘ |
| category |
Earth-rotation time scale
ⓘ
astronomical time scale ⓘ |
| comparedTo | UT1 ⓘ |
| correctionType |
annual and semiannual terms
ⓘ
seasonal variation correction ⓘ |
| definedBy | International Astronomical Union NERFINISHED ⓘ |
| differenceFrom | UT1 plus empirical seasonal terms ⓘ |
| era | mid 20th century ⓘ |
| goal | to smooth irregularities in Earth's rotation ⓘ |
| measures | Earth rotation-based time ⓘ |
| partOf | Universal Time family ⓘ |
| purpose | to provide more uniform civil timekeeping ⓘ |
| referenceMeridian | Greenwich meridian NERFINISHED ⓘ |
| refines |
UT0
ⓘ
UT1 ⓘ |
| replacedBy |
Coordinated Universal Time
NERFINISHED
ⓘ
UTC NERFINISHED ⓘ |
| status | obsolete ⓘ |
| timeStandardType | mean solar time at Greenwich with corrections ⓘ |
| usedIn |
astronomy
ⓘ
geodesy ⓘ timekeeping ⓘ |
| uses |
empirical corrections for Earth rotation
ⓘ
seasonal corrections ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.