The "Air Almanac" of the United States and Great Britain tabulates celestial coordinates for 10 minute intervals for the use in aerial navigation.

Stars, Dev, he shouted at himself, think of stars now, celestial navigation, precomps, star tables, air almanacs ... "Now, what were you looking at?"

The Astronomical Almanac, the Nautical Almanac, and the Air Almanac, which are used in navigation, are compiled from these observations.

The Nautical Almanac is one of a number of almanacs published by the U.S. Naval Observatory: the Astronomical Almanac, the Air Almanac, and Astronomical Phenomena.

The latitude and longitude of that point is known as the celestial body's geographic position (GP), the location of which can be determined from tables in the Nautical or Air Almanac for that year.

It was assigned to the star by Her Majesty's Nautical Almanac Office in the late 1930s during the creation of The Air Almanac, a navigational almanac for the Royal Air Force.

Ultralight vehicles may be operated during the twilight periods 30 minutes before official sunrise and 30 minutes after official sunset or, in Alaska, during the period of civil twilight as defined in the Air Almanac, if:

Two second-magnitude stars, Alpha Pavonis and Epsilon Carinae, were assigned the proper names 'Peacock' and 'Avior' respectively in 1937 by Her Majesty's Nautical Almanac Office during the creation of 'The Air Almanac', a navigational almanac for the Royal Air Force.