Lumos: Sun and Moon Tracker for Android

11 things about Lumos: Sun and Moon Tracker

1. • The notifications module lets you sign up to receive notifications for significant solar and lunar events, including: astronomical, nautical, and civil dawn/dusk, blue hour, golden hour, sunrise/set, solar noon, moon rise/set, lunar transit, and lunar perigee/apogee (requires Lumos Pro).

2. • The augmented reality view harnesses the power of AR to visually project past, present, or future sun and moon positions (and moon phases!) onto your surroundings, letting you perfectly visualize your plans.

3. • The Street View mode works like the AR view, but it takes advantage of Google Street View to allow you to envision sun and moon positions for remote locations (requires Lumos Pro).

4. • The map view overlays the sun and moon positions for a given time and location onto a map of that location, letting you make plans from afar.

5. • The shadow length view calculates the exact length of the shadow an object will cast on a given time and day, letting you see the result both visually and numerically.

6. • The calendar view displays a simple list of rise/set times and moon phases throughout the year, letting you see the big picture at a glance.

7. NOTE: The sun and moon positions calculated by Lumos are accurate to within a small fraction of a degree.

8. Intuitive yet powerful, Lumos accurately predicts the position of the sun and moon at any time, on any day, in any place.

9. If you are seeing inaccurate positions, please calibrate your device's compass and ensure that you are not near any sources of electromagnetic interference (e.g. microwaves, computers, car engines, high voltage lines).

10. You can also calculate the height of an object if you know the length of its shadow.

11. Phone cases containing batteries are known to cause compass interference.