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The Air Almanac

Picture of the 2024 Air Almanac box and CD The Air Almanac contains the astronomical data required for air celestial navigation. The book provides the following data tabulated at 10-minute intervals to a precision of 1 arcminute: the Greenwich hour angle and declination of the Sun, Moon, and three navigational planets; the Greenwich hour angle of Aries; rise and set times of the Moon for a range of latitudes; and other data. Each edition also contains sky diagrams for each month; sunrise, sunset, and twilight tables; and positions of the navigational stars. The Air Almanac is available nine months in advance of its edition date.

Beginning with the 2008 edition, The Air Almanac is available only in PDF format. It is expected that those requiring a paper copy of certain pages will have access to a printer. Starting with the 2015 edition, users may download the entire almanac free of charge, although the CD is still available for purchase through the Government Publishing Office (GPO).


Editions of The Air Almanac Available for Download
Year Title Link File Size
2024 aira24_all.pdf 34 MBytes
2023 aira23_all.pdf 34 MBytes
2022 aira22_all.pdf 43 MBytes

Some links of interest for The Air Almanac: