Solar-day
noun
1.
Astronomy. the time interval between two successive transits by the sun of the meridian directly opposite that of the observer; the 24-hour interval from one midnight to the following midnight.
2.
Law. the period of time from sunrise to sunset.
noun
1.
the period of time during which the earth makes one complete revolution on its axis relative to the sun See day (sense 6)
solar day
See under solar time.
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