Blue Hour (Solar Calculator) 3.8.6

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Publisher Description

The Blue Hour describes a period of dawn and dusk, when the sky is colored specially which is very interesting for photography. The duration and timing of the Blue Hour varies depending on location and on the date. In order to achieve optimum results and to plan in advance the app Blue Hour (solar calculator) has been developed.

The calculations are not only limited to the blue hour. Further information for sun and moon events can also be calculated. This includes information about sunrise, sunset together with data of the blue hour, golden hour and twilight times (civil, nautical and astronomical). Furthermore you can calculate information about moonrise, moonset and moon phases (calculated data are approximations of +/- 1 day accuracy).

In this app you can view data for multiple locations. These can be defined manually or automatically by getting your GPS location. Additionally you have the opportunity to manually set timezones of the locations, which can be helpful if you are planning trips to locations with another timezone than the one, where you currently are in.

Core features at a glance

☀️ Calculation of sunrise, sunset and solar noon

🌗 Calculation of moonrise and moonset + moonphase

🌠 Calculation of civil blue hour

🌌 Calculation of twilight times (civil, nautical and astronomical)

🌅 Calculation of golden hour

💫 Visualization of the azimuth-data of sunrise, sunset, moonrise and moonset

💫 Visualization of the azimuth-data of sun and moon for specific time

🌦️ 5 days weather prediction

•  definition of multiple locations, including current position (based on GPS)

•  monthly forecast

•  export of forecast-data to Excel-tables

•  reminder for events

•  homescreen widget

Note: the calculated values are approximations. Additionally it depends on weather situation, how good or if the blue or golden hour is visible.

Blue Hour (Solar Calculator) is a free trial software application from the Screen Capture subcategory, part of the Graphic Apps category. The app is currently available in English and it was last updated on 2018-01-27. The program can be installed on Android.

Blue Hour (Solar Calculator) (version 3.8.6) is available for download from our website. Just click the green Download button above to start. Until now the program was downloaded 16 times. We already checked that the download link to be safe, however for your own protection we recommend that you scan the downloaded software with your antivirus.

Program Details


Publisher Robert Ehrhardt
Released Date 2018-01-27
Languages English


Category Graphic Apps
Subcategory Screen Capture

System requirements

Operating systems android

Download information

File size
Total downloads 16


License model Free Trial
Price $1.99

Version History

Here you can find the changelog of Blue Hour (Solar Calculator) since it was posted on our website on 2013-08-23. The latest version is 3.8.6 and it was updated on on 2018-03-24. See below the changes in each version:

version 3.8.6

posted on 2018-01-27

Want to help translate this app into your language? Just get in contact to me!
v3.8 (January 2018)
* some smaller bugfixes and improvements
* add adaptive icon for Android 8 and later
* update libraries

version 3.7.3

posted on 2016-09-09

Want to help translate this app into your language? Just get in contact to me!,v3.7.3 (05th Sept 2016),fix possible crashes

version 1.2.1

posted on 2013-06-28

Several fixes and updates

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Users Rating:  
  5.0/5     1
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Downloads last week: 0
Release Date: 2018-01-27
Publisher: Robert Ehrhardt
Operating System: android
Type: Free Trial