day

(redirected from solar day)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to solar day: mean solar day, Apparent solar day

day

24 hours, from midnight to midnight. See TIME OF DAY.
Collins Dictionary of Law © W.J. Stewart, 2006

DAY. A division of time. It is natural, and then it consists of twenty-four hours, or the space of time which elapses while the earth makes a complete revolution on its axis; or artificial, which contains the time, from the rising until the setting of the sun, and a short time before rising and after setting. Vide Night; and Co. Lit. 135, a.
     2. Days are sometimes calculated exclusively, as when an act required that an appeal should be made within twenty days after a decision. 3 Penna. 200; 3 B. & A. 581; 15 Serg. & Rawle, 43. In general, if a thing is to be done within such a time after such a fact, the day of the fact shall be taken inclusively. Hob. 139; Doug. 463; 3 T. R. 623; Com. Dig. Temps, A; 3 East, 407.
     3. The law, generally, rejects fractions of days, but in some cases it takes notice of such parts. 2 B. & A. 586. Vide Date.
     4. By the custom of some places, the word day's is understood to be working days, and not including Sundays. 3 Espin. N. P. C. 121. Vide, generally, 2 Chit. Bl. 141, note 3; 1 Chit. Pr. 774, 775; 3 Chit. Pr. 110; Lill. Reg. h. t; 1 Rop. Leg. 518; 15 Vin. Ab. 554; Dig. 33, 1, 2; Dig. 50, 16, 2, 1; Id. 2, 12, 8; and articles Hour; Month; Year.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
These are the solar day (1440 min), the stellar day (1436 min), the calendar year (525 600 min), the stellar year (525 969 min), the lunar day (1490 min), the lunar month (registered as the "near-27-day period"), and the period of the lunar evection (45 809 min).
leading to the value of the resonance RFCN period equal to [P.sub.f] = -430.32 [+ or -] 0.07 solar days and quality factor [Q.sub.f] = 20600 [+ or -] 340, by using Eq.
Since 1820, the mean solar day has increased by about 2.5 milliseconds."
Determination of the yearly periods with the accuracy of 1 h also yielded two peaks: one equal to 365 average solar days (calendar year) and another equal to 365 days plus 6 h (sidereal year).
"Light and dark patterns are the major synchronizer of circadian rhythms to the 24-hour solar day," said Dr Mariana Figueiro, Lighting Research Center Light and Health Program director and principal investigator on the project.
So, the same numbers of histograms were divided by the time interval equal to the duration of solar day: 86400 sec.
The iterations of the same form have the periods of the stellar day (1.436 min), the solar day (1.440 min), the calendar year (365 solar days), and the sidereal year (365 solar days plus 6 hours and 9 min).
The shape of corresponding histograms changes with the period equal to sidereal and solar day, i.e.
Vistra Energy said that its TXU Energy subsidiary offers solar products for businesses and homes, including the recently announced Free Nights and Solar Days plan, the TXU Solar Club plan, the TXU Energy Solar Advantage plan, and TXU Energy Solar for Business.