Osgood's is asking "Why only celebrate delicious cheeseburgers on one day in September when you can celebrate them all month long!?!" Enjoy FREE burgers now through Sunday, September 30th, only at Osgood's! *You must purchase any one burger in order to get one of equal or lesser value FREE. This promotion cannot be combined with any other offer. This promotion does not apply to the Kids Menu. Only beef patties qualify.