Holidays

QI'lop - A holiday which comes in the tenth Klingon month. QI'lop celebrates the superiority of the Klingon military. Like most Klingon holidays QI'lop is celebrated with much eating and drinking, but it is also marked by a very peculiar custom, a guest brings a large dish of stuffed to'baj legs to a host's house and in return is allowed to take any non­sacred item in the house. The actual origin of this custom is obscure. (Power Klingon)

Empire Union Day (wo' boq'a' jaj) - is celebrated in the third month to honor the uniting of the Klingon people by Kahless the Unforgettable. (Conversational Klingon)

Kot'baval Festival (Qo'bo'val) - honors the defeat of the tyrant Molor by Kahless the Unforgettable in single combat. Celebrations of the festival are held throughout the Klingon Empire and include the ritual re-enactment of Molor's fight against Kahless. (TNG: "Firstborn")

Feast of the Long Night (ram nI' tay) - A winter solstice festival celebrated on the longest night of the local year (e.g. Dec. 22, 2015 on Earth). It most likely stems from a community need to share resources during the leanest hunting season; in modern times the holiday is marked by a large feast, exchanging of gifts and a tradition of charitable giving. (Klingon Christmas Carol)

Day of Honor (batlhjaj) - On this day, a warrior evaluates his or her deeds for the past year to see whether he has been honorable. It is customary to serve Rokeg blood pie on this day. The traditional ceremony on the Day of Honor includes eating 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. (VOY: "Day of Honor")