Sun Position Widget

<b>This is a Home Screen Widget, there's no app icon for it.</b> <small>Usually you need a long press on your home screen to add widgets or open the <i>Apps</i> and select the <i>Widgets</i> tab.</small>

This widget is built solely to display the current position of the sun which is known as <i>solar altitude angle</i> or <i>solar elevation angle</i>, and opposite of <i>solar zenith angle</i>.


<big><b>Features</b></big>
 • Tap to refresh/configure
 • Display altitude angle
 • Display part of the day ↓
 • Set thresholds ↓
 • Personalize to your needs
 • Beautiful widget backgrounds
 • Follows you wherever you are
 • Auto-updates every 30 minutes

<b>Thresholds</b>
Ever wanted to know at an easy glance when the sunset will be today or when will it get dark? You're in the right place; you can easily set up a threshold to see when the sun will transition to a given angle range, here are a few examples:
 • <b>sunrise</b> and <b>sunset</b> (default)
 • start/end of <b>twilights</b> (presets)
 • <b>UV/B</b> benefits (preset) ↓
 • Any <b>custom</b> angle
If you want more of these, just put more widgets, they are don't occupy much home screen space.

<b>UV/B benefits</b>
Your health can benefit from – not more than 30 minutes a day – exposure to the Sun when it's high enough. The atmosphere only lets UV/B rays through when the Sun is above 50°. <i>This is not a health advice, read more on this</i>:
 • http://articles.mercola.com/sites/articles/archive/2012/09/29/sun-exposure-vitamin-d-production-benefits.aspx
 • http://articles.mercola.com/sites/articles/archive/2012/03/26/maximizing-vitamin-d-exposure.aspx

<b>Parts of the day</b>
The widget will display the following part of the day, each with a corresponding background image:
 • <b>sunrise</b>, <b>sunset</b> at 0°: short period of time when the Sun transitions over the horizon
 • <b>day-time</b>, <b>night</b>: longer parts of the day when the Sun is farthest from the horizon
 • <b>civil twilight</b>, <b>dawn</b>/<b>dusk</b> at -6°: the sky is dull blue, lighting conditions are suitable for every-day activities, but <i>there are no shadows</i>
 • <b>nautical twilight</b>, <b>dawn</b>/<b>dusk</b> at -12°: the sky is very dark blue, some stars become visible, the horizon is still visible
 • <b>astronomical twilight</b>, <b>dawn</b>/<b>dusk</b> at -18°: the sky is already black, stars become apparently visible

<b>Read more</b> about
 • <b>twilights</b>: http://en.wikipedia.org/wiki/Twilight
 • <b>altitude angle</b>: http://en.wikipedia.org/wiki/Solar_zenith_angle
 • <b>light pollution</b> ☹: https://www.mensjournal.com/features/where-did-all-the-stars-go-20131115


<big><b>Permissions</b></big>
<b>GPS Location</b>: the Sun's position highly depends on where on Earth you are. Few kilometers away and the sunset already a few minutes different. Don't worry about battery drain, the widget uses the last location if available. Only updates when the screen is on every 30 minutes; or when you tap it.

<b>Background Location</b>: home screen widgets need to access location all the time in order to show up-to-date information.

<big><b>Any feedback</b> is warmly welcome and will be taken into consideration!</big>

<small><small><i>The Android robot is reproduced or modified from work created and shared by Google and used according to terms described in the Creative Commons 3.0 Attribution License.</i></small></small>