Also known as 'Tarvu Hen-Henty', Tarvu's Day is the holiest day in the Tarvuist calendar, held on December 25th - the same day as Christmas Day.

Tarvu's Day marks the day on which Tarvu announced to the people of Mun-Mun that he was the Lord. It is a day of celebration, on which friends and family gather. Together they dance, just as Tarvu performed his dance in the form of 100 replicas of himself, eat, drink and generally get very merry!

The day normally begins with a family breakfast of peanuts (Tarvu loved peanuts but detested nuts; he was able to get away with this because peanuts are actually legumes), eggs (at least 2 must be eaten by each member) and milk that has been flavoured with raisins, known as Raisin Milk or 'Rantini'. The reason why is that Tarvu had his own vineyard, and he would give beggars and paupers handfuls of grapes whenever they passed. As Tarvu's Day is a day of giving and love, the significance of raisins (i.e dried grapes) becomes clear. The reason, however, as to why milk has been added, is less clear. It is believed to be added some time in the 18th century, and has since stuck.

Rantini is prepared the night before, by putting a handful of raisins in a jug of milk, and leaving them to soak overnight. Before drinking, the raisins are removed and planted in the back garden, traditionally by the children. Although no vines grow from this, the children seem to love this game, and many families do indeed plant real vines, secretly, in the spot where their children have planted the raisins, so that when the vines actually grow, the children believe they were responsible for their growth.

The family then go to the Temple (Chabernackle). There are some notable changes to the ceremony for this day:

The Priestmunties perform an elaborate dance (based on moves similar to the Jildum Jinny dance performed by Tarvu), while the congregation copy down these moves into little notebooks. At the end of the ceremony, the paper notes are collected, and burnt.

No bells are rung, as it was said “no bells shall do battle with Tarvu's great words in the valley of Mun-Mun” (Qu'st''ns 1-4, V.III.b 4).

The Bellmunty emerges from his quarters completely bell-less, with the congregation being allowed to look at him as he walks through the temple.

In some temples, it is customary for the congregation to strike at the Bellmunty with sticks, an act that symbolises the warding off of dissenters (most notably, Yarvin) who tried to drown out Tarvu's words in the valley. However, these days, the sticks (known as 'cuffies') are usually made out of cloth, and cause little or no pain to the Bellmunty.

After temple, familes come home and have a sleep for one hour. This hour is perhaps the holiest hour in the whole year, as it represents the rest the people of Mun-Mun needed after they had been give the Revelation by Tarvu, an exhausting time.

After sleeping, the family rise, wash, then sleep again for another hour. In some countries (most notably, Spain) this second sleep is often expanded to two hours. Some less religious Tarvuists, often miss out this second sleep, and there is indeed much debate as to why this second sleep is theologically necessary.

Then the family have a late lunch. This consists of roast beef (Tarvu was very fond of beef), rice and onion loaf (known as Onionini). For dessert, manfi cakes in honey and fresh fruit (but no bananas, as their curved shape represents imperfection). Amzamalvinni pie is also often eaten. During the meal, each member of the family takes turns to perform some of the traditional dance moves, however, older relatives are usually exempt from this due to health reasons.

After dinner, the family sing Tarvuist songs, such as 'Tarvu, Tarvu King of the Valley' and 'Talamub mub minton' (Trans. 'Bequeathed'). The tuba is often used as an accompanying instrument. Indeed, many Tarvuist children learn the tuba at school, while others are being taught the recorder.

Much wine is drunk, as well as raisin milk. Games are also played, mainly 'Tin-Mub' which consists of much clapping and whistling at the same time. It is a joyous, noisy, happy time.

Presents are also given, normally at the end of the day. It is traditional for Tarvuists to give 8 presents to each person. As this can be costly, most people buy one larger present, and then give 7 smaller ones. Nuts, raisins, hard-boiled eggs that have been painted are common types of additional gifts. Some give more practical presents, such as washing up liquid, toothpaste, even bleach. All these are accepted with grace.

Then, when the evening is over, the father of the house bangs a large gong, and the family go silently to bed. While the children sleep, the mother and father are forbidden to enage in sexual activties until the morning. It is hardly surprising that a disproportionate amount of Tarvuist births occur nine months later at the end of September and the beginning of October!

Sex: Strictly prohibited during Tarvu's Day.