Interesting, I've planned similar shots before and used different tools that serve a similar purpose. The Photographer’s Ephemeris has neat visualizations: https://photoephemeris.com/
NASA's Horizons ephemeris is also pretty good at preparing data for this purpose. I've used it with a little script to check when the sun/moon will be in a given box.
Smartphones have the huge advantage of direction sensors (3D magnetometer and gyro). I remember using apps like Google sky map (or something like that) way back in 2011 to look at satellites and planets.
I’d like to subscribe to stick™ pro! I tried a piece of string and it waved around in the wind and didn’t work, so I think I may need a paid service for this.
NASA's Horizons ephemeris is also pretty good at preparing data for this purpose. I've used it with a little script to check when the sun/moon will be in a given box.
hint, watch the sticks shadow
other hint, can use almost anything that casts a shadow, as a stick substitute.
* even more hints availible with stick™ pro
For instance in Houston the sunrise aligns with Texas Avenue around the June solstice.
Consequently, there are no sunset alignments for the downtown skyscrapers.