This diagram shows the Time dimension, three of its hierarchies, and their components. The top component is Total Time (ttime). From top to bottom, the Time business hierarchy is Business Year, Business Half Year, Business Month, Business Half Month, Business Week, and Day. From top to bottom the Time Calendar Week hierarchy is Calendar Week, and Day. From top to bottom, the Time Calendar Hierarchy is Calendar Year, Calendar Half Year, Calendar Quarter, Calendar Month, and Day