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Perpetual Nautical Almanac

Using the U

Using the  U

Perpetual Nautical Almanac

by RPA Technologies
Perpetual Nautical Almanac
Perpetual Nautical Almanac
Perpetual Nautical Almanac

What is it about?

Using the U.S. Naval Observatory NOVAS library and solar system ephemerides from JPL, high precision positions can be calculated in real-time from 1900 to 2050.

Perpetual Nautical Almanac

App Details

Version
1.3.0
Rating
(2)
Size
136Mb
Genre
Navigation
Last updated
August 24, 2021
Release date
October 10, 2019
More info

App Screenshots

Perpetual Nautical Almanac screenshot-0
Perpetual Nautical Almanac screenshot-1
Perpetual Nautical Almanac screenshot-2
Perpetual Nautical Almanac screenshot-3

App Store Description

Using the U.S. Naval Observatory NOVAS library and solar system ephemerides from JPL, high precision positions can be calculated in real-time from 1900 to 2050.

Simply select date and time and all values are recalculated instantly. The estimated elevation value is only needed for calculating sunrise/sunset, twilight, and moonrise/moonset.

The app provides the following functionalities:

*Aries: GHA position

*Sun:
-GHA/dec
- Astronomical dawn, nautical dawn, civil dawn, sunrise, sunset, civil dusk, nautical dusk, astronomical dusk, and meridian passage at Greenwich.
- Semidiameter
- Sunlight world map with the Sun and the Moon position.

*Moon:
- GHA/dec
- Moonrise/moonset and meridian passage at Greenwich.
- Semidiameter
- Moon phase and age of the Moon.

*Planets:
- GHA/dec for Venus, Mars, Jupiter, and Saturn.

*Stars:
- Magnitude, SHA/dec of 99 stars ordered by SHA.

*Corrections:
- Correction for the atmospheric refraction.
- Correction for the dip of the horizon.
- Parallax correction for the Moon, the Sun, Venus, and Mars.

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