TIL For one minute each night, skyscrapers, tugboats, hotels, a yacht club and police cruisers send a blinking goodnight message to sick kids inside a children’s hospital.

Six years ago a small group of lights would appear near the hospital to show the message but now numerous lights are seen along the coast and in the surrounding buildings. Some buildings have even installed automated lights that will blink at 8;30pm each night. The hospital has an open view of the harbor making it easier to see the lights from the boats.