<?xml version="1.0" encoding="UTF-8"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
   <rdf:Description rdf:about="">
      <Location xmlns="http://purl.org/dc/terms/">
        <rdf:Description rdf:about="http://purl.org/dc/terms/spatial">
             <title xmlns="http://purl.org/dc/terms/" xml:lang="en-US"></title>
             <lat xmlns="http://www.w3.org/2003/01/geo/wgs84_pos#"></lat>
             <long xmlns="http://www.w3.org/2003/01/geo/wgs84_pos#"></long>
        </rdf:Description>
      </Location>
      <PhysicalResource xmlns="http://purl.org/dc/terms/">
        <rdf:Description rdf:about="http://purl.org/dc/terms/temporal">
           <date xmlns="http://purl.org/dc/terms/" rdf:datatype="http://purl.org/dc/terms/W3CDTF"></date>
           <jd xmlns="http://www.example.org/time#"></jd>
           <tzd xmlns="http://www.example.org/time#"></tzd>
        <PeriodOfTime xmlns="http://purl.org/dc/terms/">
          <rdf:Description rdf:about="http://purl.org/dc/terms/Period">
            <duration xmlns="http://www.example.org/time/local/sol#"  rdf:datatype="http://www.w3.org/TR/xmlschema-2/#duration"></duration>
          </rdf:Description>
        </PeriodOfTime>
        <Local xmlns="http://www.example.org/time/local/">
          <rdf:Description rdf:about="http://purl.org/dc/terms/temporal">
            <description xmlns="http://purl.org/dc/terms/" xml:lang="en-US"></description>
            <startAstronomical xmlns="http://www.example.org/time/local/sol#">N/A</startAstronomical>
            <startNautical xmlns="http://www.example.org/time/local/sol#">N/A</startNautical>
            <startCivil xmlns="http://www.example.org/time/local/sol#">N/A</startCivil>
            <rise xmlns="http://www.example.org/time/local/sol#"></rise>
            <xsit xmlns="http://www.example.org/time/local/sol#"></xsit>
            <set xmlns="http://www.example.org/time/local/sol#"></set>
            <endCivil xmlns="http://www.example.org/time/local/sol#">N/A</endCivil>
            <endNautical xmlns="http://www.example.org/time/local/sol#">N/A</endNautical>
            <endAstronomical xmlns="http://www.example.org/time/local/sol#">N/A</endAstronomical>
            <rise xmlns="http://www.example.org/time/local/luna#">N/A</rise>
            <xsit xmlns="http://www.example.org/time/local/luna#">N/A</xsit>
            <set xmlns="http://www.example.org/time/local/luna#">N/A</set>
          </rdf:Description>
        </Local>
        <UTC xmlns="http://www.example.org/time/utc/">
          <rdf:Description rdf:about="http://purl.org/dc/terms/temporal">
            <description xmlns="http://purl.org/dc/terms/" xml:lang="en-US">UTC</description>
            <rise xmlns="http://www.example.org/time/utc/sol#"></rise>
            <xsit xmlns="http://www.example.org/time/utc/sol#"></xsit>
            <set xmlns="http://www.example.org/time/utc/sol#"></set>
          </rdf:Description>
        </UTC>
        </rdf:Description>
      </PhysicalResource>
   </rdf:Description>
</rdf:RDF>

Paste to W3C RDF Validator

Magic Decoder Ring (DO NOT LOSE!!!)
Record Head	(ref:Calculation Page) dct:title (Title) dct:type (Output RDF/XML) dct:language (Language) dct:creator (Author) dct:modified (Issued)	Record Content	dct:identifier (In the Cloud Access Reference "rdf:about") dct:temporal (Coverage) dct:spatial (Coverage) overheid:authority (Responsibility For Calculations or Engineering Sign-off)		OWMS 4.0
dct:identifier	dct:URI			rdf:about
overheid:authority	dct:URI		http://www.srrb.noaa.gov/highlights/sunrise/sunrise.html	Calculation Details	PAGE
Location	dct:spatial		*** (space coverage class)***
Location	dct:spatial		Place Name	dct:title	GNIS
Location	dct:spatial		Decimal Latitude	geo:lat	GNIS
Location	dct:spatial		Decimal Longitude	geo:long	GNIS
Physical Resource	dct:temporal		Date	dct:date	PAGE
Physical Resource	dct:temporal		Julian Day	ex:time#jd	PAGE
Physical Resource	dct:temporal		Time Zone Designator	ex:time#tzd	CONUS
Physical Resource	dct:temporal	dct:PeriodOfTime	***(time coverage class)***
Physical Resource	dct:temporal		Elapsed Time Between Sunrise and Sunset	ex:time/local/sol#duration	PAGE
Physical Resource	dct:temporal	ex:time#Local	***(time coverage class)***
Physical Resource	dct:temporal	ex:time#Local	Applicable Time Zone	dct:description	PAGE
Physical Resource	dct:temporal	ex:time#Local	Start of Astronomical Twilight (Sun 18 Degrees below Horizon)	ex:time/local/sol#startAstronomical	USNO
Physical Resource	dct:temporal	ex:time#Local	Start of Nautical Twilight (Sun 12 Degrees below Horizon)	ex:time/local/sol#startNautical	USNO
Physical Resource	dct:temporal	ex:time#Local	Start of Civil Twilight (Sun 6 Degrees below Horizon)	ex:time/local/sol#startCivil	USNO
Physical Resource	dct:temporal	ex:time#Local	Local Sunrise	ex:time/local/sol#rise	PAGE
Physical Resource	dct:temporal	ex:time#Local	Sun Transit Time (aka Solar Noon)	ex:time/local/sol#xsit	PAGE
Physical Resource	dct:temporal	ex:time#Local	Local Sunset	ex:time/local/sol#set	PAGE
Physical Resource	dct:temporal	ex:time#Local	End of Civil Twilight (Sun 6 Degrees below Horizon)	ex:time/local/sol#endCivil	USNO
Physical Resource	dct:temporal	ex:time#Local	End of Nautical Twilight (Sun 12 Degrees below Horizon)	ex:time/local/sol#endNautical	USNO
Physical Resource	dct:temporal	ex:time#Local	End of Astronomical Twilight (Sun 18 Degrees below Horizon)	ex:time/local/sol#endAstronomical	USNO
Physical Resource	dct:temporal	ex:time#Local	Local Moon Rise	ex:time/local/luna#rise	USNO
Physical Resource	dct:temporal	ex:time#Local	Moon Transit Time	ex:time/local/luna#xsit	USNO
Physical Resource	dct:temporal	ex:time#Local	Local Moon Set	ex:time/local/luna#set	USNO
Physical Resource	dct:temporal	ex:time#UTC	***(time coverage class)***
Physical Resource	dct:temporal	ex:time#UTC	Applicable Time Zone	dct:description	PAGE
Physical Resource	dct:temporal	ex:time#UTC	Sunrise UTC	ex:time/utc/sol#rise	PAGE
Physical Resource	dct:temporal	ex:time#UTC	Sun Transit Time UTC	ex:time/utc/sol#xsit	PAGE
Physical Resource	dct:temporal	ex:time#UTC	Sunset UTC	ex:time/utc/sol#set	PAGE

1. Directions:
   Select a location from the City pulldown menu, OR select "Enter Lat/Long ->" from the pulldown menu, and manually enter the latitude, longitude and time zone information in the appropriate text boxes. The following sign conventions are used:

   Longitude:	Latitude:
   Positive in Western Hemisphere	Positive in Northern Hemisphere
   Negative in Eastern Hemisphere	Negative in Southern Hemisphere

   Latitude and Longitude can be in deg/min/sec, or decimal degrees entered in the "Deg:" field. If you select a city from the pulldown menu, the latitude, longitude and time zone fields will be filled in automatically. If you want to input latitude, longitude or time zone manually, be sure to select "Enter Lat/Long -->" from the City pulldown box, or your numbers will be overwritten by the selected city's location.

2. You can enter a different time zone for a location by selecting "Enter Lat/Long -->" in the City pulldown box. Otherwise, the time zone associated with the selected city's Local Standard Time will be automatically entered. Selecting "Yes" in the Daylight Saving field will cause the resulting sunrise, sunset and solar noon times to be adjusted forward one hour. If you are uncertain of the time zone for a location, refer to our Time Zone Table.

3. The program retrieves the current date from your computer, and fills the month, day and year fields. To perform calculations for a different date, simply select a month in the pull down menu, and enter the day and four digit year in the appropriate input boxes. When entering a day or year, you will need to click the "Calculate Sunrise/Sunset" button to update the results for this date.

4. Once the calculation results are displayed, you may use your web browser's "Print" function to obtain a hardcopy of the results.

5. For locations above the Arctic Circle and below the Antarctic Circle, when a sunrise or sunset does not occur on the given day the program locates the local time and date of the most recent sunrise or sunset, and the next sunset or sunrise. When this occurs, the UTC fields will display "prior" or "next" information instead of the UTC times.

6. NOTE: For latitudes greater than 72 degrees N and S, calculations are accurate to within 10 minutes. For latitudes less than +/- 72° accuracy is approximately one minute. See Solar Calculation Details for further explanation.