Nautical Almanac vVARY

Navigational Algorithms

About this app

Developer Description

The Nautical Almanac in your smartphone or tablet

Celestial navigation - Astronavigation

Nautical almanac:
- Equatorial geocentric coordinates: RA/GHA, Declination for Sun, Moon, and navigational stars and planets .
- SD, HP
- SHA
- GHA Aries

Visible sky:
- Identification of stars and planets - it plots the visible sky from a position at a certain moment.
- Polar and horizon chart.

Planning observation:
- Twilight
- Rise/set for Sun and Moon
- Meridian passage

Solar time:
- GAT, LAT, LMT
- Equation of time

Sidereal time (Aries):
- LHA, GAST, LAST

Lunar distances

- Three methods of location: by input dialog box, using Google Maps, direct location (provider: GNSS, Network), to initialize your position.
For GPS or network location - "Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible

- Your last position is automatically saved.
- Storage permission needed for Google Maps cache and for save your position.

Manual and examples at the developer's website.

Version Information

Version: -
Downloads: 1K+
Updated on: -
Released: Jul 16, 2014
Requires: Android Varies with device

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Nautical Almanac users say on Google Play

★★★★★

A Google user

Fantastic app. Every component works. Only annoyance is the time changes to Local instead of UT1 when you enter a new time. But a few clicks and all is OK. Update...Even better now with the April 2020 update. Date and time are UT1. I love it.

★★★

A Google user

Great application. Worked on Android 5. Upgrade to Android version 6 and nothing works, always crahes

★★

A Google user

Seems useful but I can't find any way to have it use my phones GPS location - it has to be I put in manually. It's good to be able to override the default, but my phone knows where it is why doesn't an app running on the phone know it? There's a Locate button but it doesn't work on Android 10 (Pixel 4) Also what I really want is sun and moon meridian passage and altitude at MP.