

Nebraska is split into two time zones. The Central Time zone comprises the eastern half of the state, while the western half observes Mountain Time.
Nebraska is bordered by South Dakota to the north; Iowa to the east and Missouri to the southeast, across the Missouri River; Kansas to the south; Colorado to the southwest; and Wyoming to the west. The state has 93 counties; it occupies the central portion of the Frontier Strip.
Three rivers cross the state from east to west. The Platte River runs through the heart, the Niobrara River flows through the northern part of the state's region, and the Republican River which traverses through the southern part of the state.
Nebraska is composed of two major land regions: the Dissected Till Plains and the Great Plains. The easternmost portion of the state was scoured by Ice Age glaciers; the Dissected Till Plains were left behind after the glaciers retreated. The Dissected Till Plains is a region of gently rolling hills; Omaha and Lincoln are located within this region.