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Related to solar day: mean solar day, Apparent solar day
1. The time required for a single rotation of the earth on its axis with respect to the sun, varying slightly throughout the year due to variations in the earth's orbit and other factors.
2. A mean solar day.
(Astronomy) the period of time during which the earth makes one complete revolution on its axis relative to the sun. See day6
1. the interval of light between two successive nights; the time between sunrise and sunset.
2. the light of day; daylight.
a. Also called mean solar day. a division of time equal to 24 hours and representing the average length of the period during which the earth makes one rotation on its axis.
b. Also called solar day. a division of time equal to the time elapsed between two consecutive returns of the same terrestrial meridian to the sun.
c. a division of time equal to 24 hours but reckoned from one midnight to the next.
4. an analogous division of time for a planet other than the earth: the Martian day.
5. the portion of a day allotted to work: an eight-hour day.
6. (often cap.) a day having a particular purpose or observance: New Year's Day.
7. a time considered as propitious or opportune: His day will come.
8. Often, days. a particular era: in olden days.
9. Usu., days. period of life or activity: His days are numbered.
10. period of existence or influence; heyday: In my day we called them “hepcats.”
11. the contest or battle at hand: to win the day.Idioms:
1. call it a day, to stop working for the rest of the day.
2. day in, day out, every day without fail; regularly. Also, day in and day out.
[before 950; Middle English; Old English dæg]
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|Noun||1.||solar day - time for Earth to make a complete rotation on its axis; "two days later they left"; "they put on two performances every day"; "there are 30,000 passengers per day"|
tomorrow - the day after today; "what are our tasks for tomorrow?"
today - the day that includes the present moment (as opposed to yesterday or tomorrow); "Today is beautiful"; "did you see today's newspaper?"
yesterday - the day immediately before today; "it was in yesterday's newspapers"
morrow - the next day; "whenever he arrives she leaves on the morrow"
eve - the day before; "he always arrives on the eve of her departure"
date - a particular day specified as the time something happens; "the date of the election is set by law"
daylight, daytime, day - the time after sunrise and before sunset while it is light outside; "the dawn turned night into day"; "it is easier to make the repairs in the daytime"