Oko iyawapi. In the Lakota language, oko iyawapi means "week count." The Lakota week begins on Monday morning and ends Sunday night. This oko iyawapi is organized around a photo taken each week at Wingsprings, beginning the week of February 23 to March 1, 2009. It is based on a traditional waniyetu iyawapi, or "winter count," like the detail of one drawn by High Hawk shown above. But whereas Lakota winter counts were added to annually, this oko iyawapi is added to weekly. Soon you may click the image of the windsock to go to the weekly posts.