About Variation
VARIATION for the current day. Used in navigation with a magnetic compass. - Variation is the angle between the magnetic and geographic meridians at any place, expressed in degrees east or west to indicate the direction...
VARIATION for the current day.
Used in navigation with a magnetic compass.
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Variation is the angle between the magnetic and geographic meridians at any place, expressed in degrees east or west to indicate the direction of magnetic north from true north. Called MAGNETIC VARIATION when a distinction is needed to prevent possible ambiguity. Also called MAGNETIC DECLINATION. (Bowditch)
The app uses the World Magnetic Model: WMM2020.
The new model is valid from 10/12/ 2019 through 31/12/2024.
See: https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml
Your last position is automatically saved.
- Storage permission needed for Google Maps cache and for save your position.
COURSE CALCULATOR
Compass and true course.
DEVIATION COEFFICIENTS
Dev = A + B SIN(Ra) + C COS(Ra) + D SIN(2Ra) + E COS(2Ra)
Calculate the coefficients A,B,C,D,E with "Magnetic compass" Windows application, (available at Navigational Algorithms website).
Enter them and save. The App will read the data and Course calculator will be able to compute the deviation.
USER INTERACE
- Zoom buttons +/-
- Map types: normal, terrain and satellite
- GPS location. ("Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible)
Events on Map:
• Long Click: adds a mark with the variation at position for the current day.
• Tap the Mark to see the information.
• Map gestures: https://developers.google.com/maps/documentation/android-sdk/controls
Previous Versions
Here you can find the changelog of Variation since it was posted on our website on 2017-01-04 02:53:12.
The latest version is 4.8 and it was updated on 2024-04-22 12:43:29. See below the changes in each version.
Variation version 4.8
Updated At: 2023-12-19
Changes: New UI for:
- Course calculator.
- Deviation coefficients.
Updated to:
- Android 14 (API 34)
- com.google.android.gms:play-services-maps:18.0.2
Variation version 4.7
Updated At: 2023-12-05
Changes: New UI for:
- Course calculator.
- Deviation coefficients.
Update to:
- Android API 34
- com.google.android.gms:play-services-maps:18.0.2
Variation version 4.5
Updated At: 2023-08-18
Variation version 4.4
Updated At: 2022-06-06
Changes: Course calculator.
Update to:
Android API 32
'com.google.android.gms:play-services-maps:18.0.2'
Variation version 4.3
Updated At: 2021-05-28
Changes: WMM2020 - World Magnetic Model 2020, valid from 10/12/ 2019 through 31/12/2024.
- Your last position is automatically saved.
- Storage permission needed for Google Maps cache and for save your position.
Android 11.0 update
Variation version 4.2
Updated At: 2020-04-17
Changes: WMM2020 - World Magnetic Model 2020, valid from 10/12/ 2019 through 31/12/2024.
- Your last position is automatically saved.
- Storage permission needed for Google Maps cache and for save your position.
Android 10.0 update
Variation version 4.1
Updated At: 2020-04-06
Changes: WMM2020 - World Magnetic Model 2020, valid from 10/12/ 2019 through 31/12/2024.
Android 10.0 update
Variation version 3.1
Updated At: 2019-11-21
Changes: Android 10.0 update
Variation version 3.0
Updated At: 2019-07-30
Changes: Updated to WMM2015.v2
This new model addresses the degraded performance of WMM2015 in the Arctic region and supersedes it.
Variation version 2.2
Updated At: 2016-08-01
Changes: Updated: WMM2015,The new World Magnetic Model is valid from 2014-12-15 to 2019-12-31.,- ActionBar added, for compatibility with tablets.
Disclaimer
Official Google Play Link
We do not host Variation on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
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