Many people hold at least one blót every month or so. The dates given are ones that are commonly used in modern Ásatrú, and while it always isn't possible to be exact on dates, we pick the Saturday or Sunday closest to it. Some of the blessings listed here were also held to be important by our ancestors. The most important are Yule, Ostara, Midsummer and Winter Nights. Some of the rites are based on localized celebrations, such as the Icelandic Þórablót. Others are modern creations, such as Skaðiblot. Many people and groups will follow their own calendars, celebrating what they feel is important to them.
Important Days of the Year
Yule
Traditional: End of December (running for 12 days)
Yule is the holiest of all our holy days. It is the time when our Gods and Goddesses are closest to us. In fact, the Norse called them "Yule-Beings" and one of Óðinn's names is Jólnir, or "Yule-One." It is also the time when our ancestors and those who have gone before us return to Miðgarð to feast with us, and so a plate is set out for them, heaped high with steaming food. The alfs, troll, kobolds, land spirits and many others also wander freely at this time and need to be warded off or invited in as guests. The wild hunt which began riding with winter's first snows reaches its peak at this time, and while it is dangerous to meet them, food and drink are left out for them for they bring fruitfulness and blessing. Traditionally, oaths are sworn at this time, usually on a boar. Some kindreds will use boar-cakes. Many people will also hang holy gifts on trees, gifts for the Gods and Ghosts who gather at this time of year.
Feast of Thunar
Modern: Full moon or new moon in January or around 19 to 25
There is a modern, national holiday in Iceland whose roots to the 19th century called Þórrablót. In Iceland, this feast has nothing to do traditionally with Þórr, but is instead a celebration of traditional Icelandic culture. Many modern Ásatrúar in North America take this opportunity to honour Þórr, for it is this time of year, when Winter really sinks his teeth in, that the Warder of Humanity is needed.
Skaðiblót
Modern: New moon in January or end of January to beginning of February
The North Stone Hearth holds a blót to Skaði at this time of year. On this day, we attempt to melt this wintry Goddesses frozen disposition, or at least soften it somewhat, and ask her to ease her cold grip on the land. Sometimes tied in with Disting.
Idis-Þing or Disting
Traditional: Beginning of February
Modern: The first weekend of February, sometimes February 2
Many modern Ásatrúar celebrate Disting, also known as Charming of the Plough, at this time of year. In Alberta in February the Earth is still covered in a thick blanket of snow and temperature's of below -30c are not unusual.
Ostara
Traditional: Sometime at mid to end of April
Modern: April 21 of the full moon, sometimes with Easter
This is the time of year when trees start budding, and a little green can be seen again. This is spring, and we celebrate her arrival with Ostara eggs, painted and decorated with the runes of fertility and home and with a morning feast. We also enact a drama in which Winter is beaten and driven out and ultimately burned in effigy.
Walburg's Night
Traditional: Late April, though was not called Walburg's
Modern April 30 through to May 1
Traditionally this is seen as the night when witches are most active. It is also seen as a night of love, and young men will go into the woods gathering tender branches and wild flowers with which to decorate the windows of their beloved. As Freya is seen as mistress of both witchcraft and love, this day is held as holy to her by many modern Ásatrúar. This is a day for honouring Freya, and is also seen as a kind of equivalent to an Ásatrú Valentine's Day.
Midsummer
Traditional: Mid-summer
Modern: June 21 (solstice)
At this time we discuss the past year and make plans for the year ahead. This day was chosen for this meeting because the Icelandic Althing (judgment-moot) was held during the summer. One a more religious note, on this day we especially honour Týr and Forseti, Gods of justice. We also ask for the Gods blessings on our works, as this is a time for starting bold, new projects. We offer as sacrifice a small model ship. Before it is cast into the flames, we all touch the ship each quietly speak a bidding or thanks to the Gods and Goddesses.
Freyfaxi
Traditional: Likely end of July though was not called Freyfaxi then
Modern: August 1
This celebration marks the time of the first harvest in traditional agriculture base societies. In modern times, we city folk take this opportunity to thank the Gods and Goddesses, especially those who are responsible for fruitfulness, for the fruits of our summer labours. We will hail Freyr and Freya, Nerthus and Njörðr, Þórr and Sif and Farmatýr ("Cargo-God", one of the name of Óðinn)
Winternights
Traditional: Mid October to end of October
Modern: Second weekend in October or sometimes the end of October
With the first snows starts that part of the year when the wall between the world of the living and the world of the dead grows thin. This will peak over the twelve days of Yule. At this time, we honour our ancestors, and remember those who have died, especially those who have died recently. We honour the ancestral Ídises and Alfs who have watched over our families, and the Gods and Goddesses who lead them. We honour Óðinn and the Wild Hunt he starts leading at this time of year, offering grain for his horse: "Óðinn, give your horse now fodder. This year thistle and thorn - the next year better grain!" And we sacrifice a bread horse (in case that's not 100% clear, that's a horse made out of bread), after placing our hands upon it and softly speaking a bidding or blessing for it to carry to the Gods and Goddesses for us.
Einherjar Day
Modern : November 11
The Einherjar are those who have fallen in battle and been taken by the Valkyries to either Óðinn's or Freya's halls, with each getting half of the slain. Einherjar Day is an entirely modern invention. However, many modern Ásatrúar felt very strongly that the war-dead needed to be honoured. Since our nation has a day for doing so, it seemed quite appropriate to honour them in an Ásatrú fashion, with a day of toasting and remembering. On this day, we will hail those who died holding the line at Ypres, those who died taking Vimy Ridge, those who died at Dieppe, and thousands, millions of others. We will hail those whose awe-inspiring courage earned them the Victoria Cross, and those whose awe-inspiring courage was never witnessed.
Other Special Days
These blessings are usually held to remember some great hero or heroine from our past. Typically, members will do their own thing on these days, from holding a private blót in their homes, to taking a moment to contemplate the one being honoured.
Remembrance for Raud the Strong - January 9
Raud was a Norwegian chieftain tortured to death by Olaf the Traitor for refusing to convert to Christianity. He was put to death by having the end of a metal horn put in his mouth, into which was put a poisonous snake which was driven down the horn and into Raud by heating the horn.
Remembrance for Eyvind Kinnrifi - February 9
Eyvind was another heathen tortured to death by Olaf the Traitor for refusing to convert. Eyvind was killed by having a brazier filled with burning coals placed on his belly.
Feast of Vali - February 14
Although there is no connection between Vali and St. Valentine, except for the superficial resemblance between their names, many modern Ásatrúar will honour the god, Vali on this day.
Ragnar Lodbrok's Day - March 28
Ragnar was a famous viking, and on this day we celebrate his sacking of Paris.
Remembrance for Haakon Sigurdsson - April 9
On this day, we remember Haakon the Great, one of the Jarls of Hlaðir, and a great defender of Heathenism during the brutal conversion.
Remembrance for Gudrod of Gudbrandsdal - May 9
Gudrod was a heathen whose tongue was cut out by Olaf the Fat (not to be confused with Olaf the Traitor).
Remembrance for Sigurd the Dragonslayer - June 9
Arguably the greatest hero in all Germanic/Scandinavian literature. We remember his might, his courage and his honour.
Remembrance for Unn the Deep -Minded - July 9
On this day, we remember the woman who was one of the great chieftains of the Icelandic settlement. She led her clan form Norway.
Death of Olaf the Fat - July 29
On this day, we celebrate the death of Olaf the Fat, a person who was canonized for his efforts to convert Norway through the tools of slaughter and torture.
Remembrance for King Radbod of Frisia - August 9
Radbod had one foot on the baptismal font and was about to receive baptism, when he asked if he would dwell with his heathen ancestors after death. He was told in no uncertain terms that he would not, and that his ancestors were surely damned. He changed his mind, saying that "he could not do without the fellowship of all those who ruled over the Frisians before him, and that he did not want to have to sit around in heaven with a little pack of beggars, and therefore he could not give the new faith any troth and he would rather stay with the one to which he, along with the whole of the Frisians, had held fast." He then staunchly defended the heathen ways of his people, opposing the Christian missionaries.
Remembrance for Hermann the Cheruscan - September 9
A great hero who kept the Romans out of Germania, keeping their culture and language safe from the destruction being experience in occupied Celtic Gaul.
Remembrance for Erík The Red - October 28; Remembrance for Leif Eriksson and Freydis Eriksdottir - Columbus Day
Leaders of the earliest European settlement in the North America.
Remembrance for Queen Sigrid of Sweden - November 9
Olaf the Traitor wished to marry her. When she told him that she had no problem with his worshiping his Christ, but had no intention of leaving the faith of her ancestors, he slapped her. She was the one behind the alliance which brought him down and saw him dead.
Weyland the Smith's (Völundr) Day - Thanksgiving Day (USA)
On this day we honour the great craftsman. Incidentally, no one really knows why this day was chosen. Its just become tradition.
Remembrance for Egill Skallagrimsson - December 9
On this day, we honour this great viking, warrior, poet and rune master. His exploits are described in the Saga of Egill Skallagrimsson