the air almanac
DESCRIPTION
The Air Almanac contains the astronomical data required for air celestial navigation. A description of the document is provided.TRANSCRIPT
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3/2/2015 TheAirAlmanac
http://aa.usno.navy.mil/publications/docs/aira.php 1/1
TheAirAlmanaccontainstheastronomicaldatarequiredforaircelestialnavigation.Thebookprovidesthefollowingdatatabulatedat10minuteintervalstoaprecisionof1arcminute:theGreenwichhourangleanddeclinationoftheSun,Moon,andthreenavigationalplanetstheGreenwichhourangleofAriesriseandsettimesoftheMoonforarangeoflatitudesandotherdata.Eacheditionalsocontainsskydiagramsforeachmonthsunrise,sunset,andtwilighttablesandpositionsofthenavigationalstars.TheAirAlmanacisavailableninemonthsinadvanceofitseditiondate.
Beginningwiththe2008edition,TheAirAlmanacisavailableonlyinPDFformat.Itisexpectedthatthoserequiringapapercopyofcertainpageswillhaveaccesstoaprinter.Startingwiththe2015edition,usersmaydownloadtheentirealmanacfreeofcharge,althoughtheCDisstillavailableforpurchasethroughtheGovernmentPrintingOffice(GPO).Twoversionsareavailable.ThefileairaYY.pdfistheentirepublicationinonelargePDFfile.ThefileairaYY_cd.zipalsocontainstheentirepublicationinPDFformat,butusesyourwebbrowsertonavigatethroughthepages.The.zipfileisvirtuallyidenticaltotheCDsoldbyGPO.
EditionsofTheAirAlmanacAvailableforDownload
Year Title Link FileSize
2015 aira15_all.pdf 59.5MBytes
2015 aira15_cd.zip 49.5MBytes
SomelinksofinterestforTheAirAlmanac:
TheAirAlmanacErratapagecontainsinformationonerrorsinthepublication.ThehistoryofTheAirAlmanacisfoundhere.OrderingInformationcontainsinstructionsonhowtoorderTheAirAlmanac.TheDepositoryLibrariesaroundtheUnitedStatesretainareferencecopyforeachyearofpublication.
THEAIRALMANAC