Information contained in the slitmask database was used to determine how often observers are late in submitting their mask designs, and how late. The plot below shows the statistics for a recent six-month time period. At left is shown the requested lead time of 4 weeks for LRIS and normal DEIMOS masks, and 8 weeks for DEIMOS “megamasks” (masks with more than 200 slits). The y-axis shows the fraction of masks still outstanding at x days before the run. If all observers submitted their masks before the deadlines, the plots below would be a boring white, with no gray areas. As it stands, the number of masks that are on-time is shown by the gap between the gray area and the 100% mark on the left-hand side of the plot. This gap is 9% for LRIS masks, 16% for DEIMOS masks, and 0% for DEIMOS megamasks. These represent the fractions of masks that actually meet the deadline.