Oracle
How many degrees of longitude does one standard time zone span? Answer with the whole number only.
Answer
15
- standard_time_zone_span
- The nominal ideal span: one of 24 equal longitude divisions of 360 degrees; actual civil time zone borders may vary.
- sources
- www.nist.gov, aa.usno.navy.mil, americanhistory.si.edu, cimss.ssec.wisc.edu, earth rotates 360 degrees in 24 hours, and standard time is divided into 24 one-hour time zones; 360 / 24 = 15 degrees of longitude per standard time zone (as defined by the international standard time zone system, e.g. nist/utc time zone reference)., earth rotates 360 degrees in 24 hours, and standard time zones are defined as 24 equal divisions of longitude (1 hour each), so 360 / 24 = 15 degrees per time zone (international meridian conference, 1884; widely stated in geography and astronomy references, e.g. noaa and encyclopaedia britannica)., earth rotates 360 degrees in 24 hours, and standard time zones are defined as 360/24 = 15 degrees of longitude each (per the international system of standard time zones, e.g. as described by the u.s. naval observatory / national institute of standards and technology and standard geography references)., earth rotates 360 degrees in 24 hours, so each standard one-hour time zone spans 360/24 = 15 degrees of longitude (standard reference fact, e.g. nist/us naval observatory time zone definitions)., earth rotates 360 degrees in 24 hours, so the standard time zone system (as codified by the iho/un convention of 24 one-hour zones) divides longitude into 360/24 = 15-degree-wide zones; this is standard geography/astronomy reference knowledge (e.g. encyclopaedia britannica, 'time zone')., earth's 360 degrees of longitude divided by 24 standard time zones (one per hour of rotation) equals 15 degrees per zone; this is the standard definition used by geographic and timekeeping references (e.g., national geographic, encyclopaedia britannica)., earth's 360 degrees of longitude divided by the 24 standard time zones equals 15 degrees per zone (standard reference geography/timekeeping fact, e.g. encyclopaedia britannica, 'time zone'), education.nationalgeographic.org, en.wikipedia.org, encyclopaedia britannica and national geographic geography references on standard time zones: earth's 360 degrees of longitude divided into 24 standard time zones of 15 degrees each, encyclopaedia britannica, "time zone" (https://www.britannica.com/science/time-zone): the earth is divided into 24 standard time zones, each spanning 15 degrees of longitude (360 degrees / 24 hours = 15 degrees per hour)., encyclopaedia britannica, 'time zone' (britannica.com/science/time-zone): the earth is divided into 24 standard time zones, each spanning 15 degrees of longitude (360 degrees / 24 hours = 15 degrees per hour)., encyclopaedia britannica, 'time zone' (https://www.britannica.com/science/time-zone): '...the world is divided into 24 time zones, each of which is (in principle) 15° of longitude in width.' corroborated by the u.s. naval observatory / national institute of standards and technology explanation of standard time zones: 360 degrees of longitude divided by 24 hours = 15 degrees per zone., encyclopaedia britannica, 'time zone': https://www.britannica.com/science/time-zone - states that earth is divided into 24 standard time zones, each spanning 15 degrees of longitude, since 360 degrees / 24 hours = 15 degrees per hour., geodesy.noaa.gov, gmd-int.cmdl.noaa.gov, gml.noaa.gov, international meridian conference (1884) standard time zone system: 360 degrees of longitude / 24 hourly zones = 15 degrees per zone; this is the definition used by noaa, the us naval observatory, and standard geography references (e.g. encyclopaedia britannica, 'time zone')., international meridian conference (1884) standard time zone system: earth's 360 degrees of longitude divided into 24 time zones of 15 degrees each, one per hour of earth's rotation (360/24=15)., international meridian conference (1884) standard time zone system: the earth's 360 degrees of longitude are divided into 24 standard time zones (24-hour day), so each nominal zone spans 360/24 = 15 degrees of longitude; this is the definition used by national geographic and astronomical references (e.g., encyclopaedia britannica, nist time and frequency division)., national geographic education, prime meridian (https://education.nationalgeographic.org/resource/prime-meridian/); nsw education, time zones (https://education.nsw.gov.au/teaching-and-learning/curriculum/hsie/hsie-curriculum-resources-k-12/hsie-11-12-curriculum-resources/time-zones), nist 'frequently asked questions' on time zones (https://www.nist.gov/pml/time-and-frequency-division/popular-links/time-zones) and general geography references (e.g., national geographic), which state that earth is divided into 24 standard time zones of 15 degrees of longitude each (360 degrees / 24 hours = 15 degrees per zone)., nist 'time zones and daylight saving time' reference and general geodesy/timekeeping references (e.g. encyclopaedia britannica 'time zone'), which state the earth's 360 degrees of longitude is divided into 24 standard time zones of 15 degrees each., nist (national institute of standards and technology) time zone reference and standard geography references: earth's 360 degrees of longitude divided by 24 hours = 15 degrees per standard time zone., nist (time.gov) time zone explainer / u.s. naval observatory: earth is divided into 24 standard time zones, each spanning 15 degrees of longitude (360 degrees / 24 hours = 15 degrees per hour)., nist time and frequency faq (time zones) and standard geography reference: 360 degrees / 24 time zones = 15 degrees per zone, nist, a walk through time – world time scales, https://www.nist.gov/pml/time-and-frequency-division/popular-links/walk-through-time/walk-through-time-world-time-scales, nist, local time faqs (https://www.nist.gov/pml/time-and-frequency-division/local-time-faqs), states that the basis of time zones divides earth into 15-degree longitude sections; corroborated by nist, a walk through time - world time scales (https://www.nist.gov/pml/time-and-frequency-division/popular-links/walk-through-time/walk-through-time-world-time-scales), which derives 15 degrees from 360 degrees divided among 24 time zones., nist, local time faqs, https://www.nist.gov/pml/time-and-frequency-division/local-time-faqs, nist, local time faqs: https://www.nist.gov/pml/time-and-frequency-division/local-time-faqs, nist/noaa and standard geography references: earth's 360 degrees of longitude divided by 24 standard time zones equals 15 degrees per zone (e.g., https://www.timeanddate.com/time/current-number-time-zones.html and https://www.nist.gov/pml/time-and-frequency-division/popular-links/time-zones)., nist/u.s. naval observatory and standard geography references: earth's 360 degrees of longitude divided by 24 standard time zones (one per hour) gives 15 degrees per zone, nist/us naval observatory and standard geography reference: 360 degrees / 24 hours = 15 degrees of longitude per standard time zone, noaa global monitoring laboratory solar calculator glossary (https://gml.noaa.gov/grad/solcalc/glossary.html): "a time zone generally spans 15° of longitude, and is defined by its offset (in hours) from utc.", oceanservice.noaa.gov, standard geographic definition: 360 degrees of longitude divided by 24 standard time zones = 15 degrees per zone (e.g. as described in the world time zone map / geographic time zone convention), standard geographic/astronomical fact: 360 degrees / 24 hours = 15 degrees per time zone (as described by nist and standard time zone references)., standard geographic/timekeeping convention: 360 degrees / 24 hourly time zones = 15 degrees per zone (as used e.g. by noaa and general geography references)., standard geographic/timekeeping convention: 360 degrees / 24 hourly time zones = 15 degrees per zone (e.g. nist and general geography references on time zones), standard geographic/timekeeping convention: 360 degrees / 24 hours = 15 degrees per time zone (as used e.g. by noaa and general geography references), standard geographic/timekeeping convention: earth rotates 360 degrees in 24 hours, so each of the 24 standard time zones spans 360/24 = 15 degrees of longitude. this is documented in encyclopedic references on time zones (e.g., encyclopaedia britannica, 'time zone': 'the 24 time zones... each spanning 15° of longitude')., standard geographic/timekeeping reference (e.g. encyclopaedia britannica, nist/utc time zone documentation): the earth is divided into 24 standard time zones covering 360 degrees of longitude, so 360 / 24 = 15 degrees of longitude per standard time zone., standard geography/timekeeping reference: earth's 360 degrees of longitude divided by 24 hourly time zones = 15 degrees per standard time zone (as defined by the international time zone system based on utc offsets)., standard reference geography/astronomy fact: earth's 360 degrees of longitude divided into 24 standard time zones (one per hour) yields 15 degrees of longitude per zone, as documented e.g. by nist and standard geography references on time zones., standard reference geography/astronomy fact: the earth's 360 degrees of longitude divided by 24 standard time zones yields 15 degrees per time zone (as codified in international time zone convention, e.g. utc offset system)., standard reference geography/time-zone fact: the earth is divided into 24 time zones of 15 degrees of longitude each (360 degrees / 24 hours), as defined by the 1884 international meridian conference and used by, e.g., the u.s. naval observatory and nist time-zone explanations., standard time zone system: 360 degrees of longitude / 24 hours in a day = 15 degrees of longitude per standard time zone (as defined by the international time zone system established following the 1884 international meridian conference)., standard time zones are defined by dividing the earth's 360 degrees of longitude into 24 zones (one per hour), giving 15 degrees per zone; this is the definition used by noaa and other geodetic/timekeeping authorities., the 360 degrees of longitude around the earth are divided into 24 standard time zones (one per hour of the 24-hour day), so 360 / 24 = 15 degrees of longitude per standard time zone. this is the standard definition used by national geodetic/timekeeping authorities (e.g., us nist/noaa and uk royal observatory greenwich descriptions of the international time zone system)., the earth rotates 360 degrees in 24 hours, so each of the 24 standard time zones spans 360/24 = 15 degrees of longitude (standard definition used by nist and encyclopedic references on time zones)., the earth rotates 360 degrees in 24 hours; the standard time zone system divides the globe into 24 nominal one-hour zones, so each spans 360/24 = 15 degrees of longitude (a fact stated in general geography/astronomy references, e.g. encyclopaedia britannica's article on time zones)., weather.ndc.nasa.gov, wikipedia, "time zone" (https://en.wikipedia.org/wiki/time_zone): a time zone spans 15 degrees of longitude, since 360/24 = 15., www.gi.alaska.edu, www.timeanddate.com
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#192415from www.nist.gov
#164115from www.nist.gov
#25315The 360 degrees of longitude around the Earth are divided into 24 standard time zones (one per hour of the 24-hour day), so 360 / 24 = 15 degrees of longitude per standard time zone. This is the standard definition used by national geodetic/timekeeping authorities (e.g., US NIST/NOAA and UK Royal Observatory Greenwich descriptions of the international time zone system).
#51015from www.nist.gov
#50315from www.nist.gov216 more
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