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A day is the 24-hour period it takes for Earth to complete one full rotation relative to the Sun, during which a location experiences morning, afternoon, evening, and night. This daily cycle is important because it drives circadian rhythms in many organisms, which are essential to vital life processes.
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Wikidata facts
- Subclass of
- time interval
- Part of
- week
- Has part
- sunrise
- Image
- GreenwUhrWelt.jpg
- Said to be same as
- nychthemeron
- Has parts of class
- time of day
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- Commons category
- Day
- topic's main category
- Category:Days
- Commons gallery
- Day
- conversion to SI unit
- 86400
- Wikidata time precision
- 11
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- unit symbol
- 日
- equivalent class
- dati.beniculturali.it/cis/Day
- Wikidata SPARQL query equivalent
- wd:Q573 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
- subdivision of this unit
- hour
- conversion to standard unit
- 24
- different from
- calendar day
- exact match
- www.w3.org/TR/owl-time/#time:unitDay
- topic has template
- Template:Parts of a day
- P8168
- Jee Yong-ju
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Article · Svenska
Ett dygn (enhetssymbol: d) är tiden mellan att solen befinner sig vid en viss punkt på horisonten tills den åter är där eller tiden mellan samma klockslag två på varandra följande dagar (uttrycken behöver inte vara helt synonyma). Tiden är (på grund av rotationen kring solen) något längre än den tid det tar för jorden att rotera ett varv runt sin axel. En rotation är 23h 56 min 4,0s långt. Dygnet i någon form är den grundläggande enheten i de flesta typerna av kalendrar. Den exakta definitionen på ett dygn varierar dock. Dygnet så som det identifieras genom ett datum börjar och slutar vid en viss tid av dygnet, i internationell tideräkning numera vid den tid som kallas ”midnatt”.
Abstract from DBpedia / Wikipedia · CC BY-SA
Gallery (21)
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