What mood is is expressed by the Character as he runs just to keep up with his fathers long strides?
what spoils his excitement despite having new clothes

What

The sentence needs a descriptor of exactly "what" will happen at gurley and marina. in this case, it is the light at the intersection turning green. in this case, the sentence could be rewritten as "the light at the intersection of gurley and montezuma will turn green exactly three seconds after the light at the intersection of gurley and marina."