On a clear day in June the terrace has sun 07:00–10:50, about 4 hours in total.
The story of Bistro Bananas
Bistro Bananas is at Skånegatan 47 on Södermalm, in the premises once occupied by Strykjärnet. It is family-run, and the same family also owns Leoparden, Indigo and Babylon, along with the cocktail bar Bakfickan next door. The kitchen centres on a wood-fired oven, turning out Neapolitan-style pizza alongside French bistro dishes such as steak tartare, and there is outdoor seating in summer.
Sources: Thatsup: Bistro Bananas · Commons: Bistro Bananas November 2015
How Stoligt works it out
Every ten minutes we draw a line from each terrace toward the sun and check whether a building or hill is tall enough to block it. Building heights come from OpenStreetMap and ground heights from Lantmäteriet, the Swedish mapping agency. The times assume a clear day, so clouds are not included here. They are on the live map, which shows today's weather.
Trees, parasols and awnings are not in the model, and we don't know exactly where on the pavement the tables stand. Treat the times as an educated guess, often accurate to within ten minutes.