Definition of apparent solar time in English:

apparent solar time


  • Time as calculated by the motion of the apparent (true) sun. The time indicated by a sundial corresponds to apparent solar time.

    Compare with mean solar time

    ‘The deviations between apparent solar time and mean solar time are described by the equation of time’
    • ‘Mean solar time, rather than apparent solar time, is the basis for local civil and standard time.’
    • ‘To correct apparent solar time to mean solar time, one uses the equation of time displayed graphically below.’
    • ‘It keeps apparent solar time, which is out of step with modern clock time on several counts.’
    • ‘Because of fast long rage communications, local apparent solar time is not useful to regulate our daily activities.’