The Day of Honor was a Klingon holiday. On this day, a warrior evaluated his or her deeds for the past year to see whether he had been honorable. It was customary to serve Rokeg blood pie on this day.
On Qo'noS, many of the the traditional ceremony rituals on the Day of Honor were observed in the Caves of Kahless. This holiday included the eating of the heart of a sanctified targ, drinking mot'lach from the Grail of Kahless, enduring the ritual of twenty painstiks, engaging in battle with a bat'leth master, and traversing the sulfur lagoons of Gorath.