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day length
(redirected from Length of day)

    Also found in: Acronyms, Encyclopedia, Wikipedia 0.02 sec.
day length
the number of daylight hours per day, increasing towards midsummer and the reverse towards midwinter. The effective trigger in the commencement and cessation of the breeding seasons in those species that demonstrate seasonal breeding.
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Some of the potential challenges of a four-day school week include the length of day for young students, the need to keep students focused during the longer day, child care and supervision of students on the unscheduled day, and the fact that 20 percent more instructional time is lost when a teacher or student misses a day.
The four-day school week by State Legislatures
It is also important to note that the current difference in the length of day from 86 400 seconds is the accumulation over nearly two centuries, not just the previous year.
Another positive Leap Second was introduced on 31 December 2008 by Monthly Notes of the Astronomical Society of Southern Africa
The first dial gives the time and the phases of the moon, with shutters in the arch above showing the varying length of day and night.
ASTRONOMICAL CLOCK; Walker Gallery by Liverpool Echo (Liverpool, England)
 
 
 
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