Day
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A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours. As a day passes at a given location it experiences morning, afternoon, evening, and nigh
Decimal clock face, made in around the start of the 19th century
Night in art
Midtown Manhattan from Weehawken September 2021 panorama 1
Midtown Manhattan from Weehawken September 2021 panorama 2
Calendar
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A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such
Day
…This daily cycle drives circadian rhythms in many organisms, which are vital to many life processes. A collection of sequential days is organized into calendars as dates, almost always into weeks, months, and years. A solar calendar organizes dates based on the Sun's annual cycle, giving consistent start dates…
Modern day Indonesian Gregorian calendar of the Jakarta Cathedral
British calendar, 1851, gilt bronze and malachite, height: 20.3 cm, Metropolitan Museum of Art (New York City)
Equinox seen from the astronomic calendar of Pizzo Vento at Fondachelli Fantina, Sicily
Catalan early 20th century perpetual calendar