Lost Coordinates

Exploration Stage: Lamplighter's Workshop
From: Carlos Light
Description: Black instructed me to check the accuracy of the City's clock. I'm not a watchmaker, of course, but I think I can manage this task. We just need to tind the chronometers used by the tower clock's keeper. Will you help? Let's start simple - with an equatorial sundial.
Completed: Such an equatorial sundial works flawlessly. Though for its time to be accurate you need to know the coordinates of its installation site, which is difficult in a city hat's lost in the fog.