SunCalc

This would be more useful for a mobile version, but it would work on a PC, too: alarm, which would go off on a sunrise +/- 2 hours (adjustable), and/or sunset +/- 2 hours (adjustable). Such electronic device is known as "astronomical relay" or...

Make a simple clock with different colored hands that show Clock Time, Sun Dial Time and Sidereal time. It would have to be a 24 hr clock. It would just be interesting to see the Equation of Time displayed essentially on clock face, and maybe...

At the moment sun azimut ray is too much like sunrise and sunset rays. A colour outside the yellow shades would pop up more clearly.

Add aerial photography so you can see actual building lines

The area I am researching has old map data. Looking at the same area on Google maps shows current information. Thanks!

first, thanx for suncal as it is now. for planning purpases I would like the possibility of filling in an alternative date in the future

Like the slider for daytime a slider for year also available

Seems niggly to comment on such a clever and well thought out app - but, for me, it would be 'convenient' if it opened up each time in 'my chosen location' - is this possible?

The zoom out button is obscured by an overlying weather forecast button, preventing a negative zoom!

The check weather box covers the + and - in the lower right hand corner. Move or remove it.

Simple calculation of total hours of sunlight

See title

Lusowko dzialka 179/78

To better understand where an area will lose direct sunlight due to terrain features.

It would be very useful for the azimuth from viewers pt to sun in sky listed along the outside of the globe when dragging sun through time.

Ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh!!!!!!

I'm not sure if this is being addressed, but when you rotate the map from it's original NSEW orientation, the sun path icon doesn't rotate along with.

Angle of elevation would make this good app great.

I would like to thank you for this great and useful web site

Add terrain feature to map (like on Google Maps), contour lines. So would be easier to check, whether sunrise or sunset can be seen from a place.

Show hour marks or tics on sun arc instead of top bar.

I would like to see moonrise and direction.

If I want to see average day direction of sun for a particular location for a range of date, for example between 15 march to 15 june.