Progression of the standard jet of 2008 September 22 observed in coronal X-ray images from Hinode/XRT. In these images and in all other images in this paper, solar north is up and west is to the right. The jet is near central meridian in the northern polar coronal hole. The limb is just inside the north (top) edge of the field of view. The 20,000 km bar shows that this jet's base arch spans about 20,000 km. In the lower left of each frame is the universal time in hours and minutes.