Soluna

Plan a photograph around the light. Choose where you will stand and what you want behind the sun or moon, and it finds the minute they line up.

Try Soluna
The CN Tower in silhouette with the setting sun directly behind its pod, and a gull crossing the sky
Sunset behind the CN Tower's pod, from Cherry Beach.
The morning sun sitting exactly on the tip of the CN Tower's spire, seen over trees
The morning sun on the tip of the spire. 23 June 2026, 6:33 a.m.
The CN Tower lit in rainbow colours at night, the moon half hidden behind its shaft
The moon going behind the tower. 26 June 2026, 9:56 p.m.
The CN Tower at night with a sliver of the moon emerging from behind it
One minute later, 9:57 p.m.
The CN Tower lit red and white at night with the full moon beside its shaft
Clear of the tower, 9:59 p.m. The whole pass took three minutes.
A wide view of a park at dawn with the sun on top of the distant CN Tower
The same morning, wide. A few steps either way and the sun misses the spire.
Moonrise past a construction crane, in time-lapse, from my old apartment.

Each of these photographs needed the right spot, the right day and the right minute. Soluna finds all three.

It draws the path of the sun or moon over a 3D map of the city, shows where shadows fall, and searches forward in time for the moment the light lines up with a landmark.

Save a position and come back to it later to see whether today is the day.

Soluna on a phone: a 3D map of downtown Toronto with the sun's path drawn as an arc over the city
A screenshot of the sunset photograph posted on Reddit, showing 2,537 upvotes and 218k views
An earlier frame of the sunset, as posted on Reddit: 218,000 views and 2,537 upvotes.

What's inside