European midsummer-related holidays, traditions, and celebrations are pre-Christian in origin. They are particularly important in geographic Northern Europe – Sweden, Denmark, Norway, Finland, Estonia, Latvia and Lithuania – but is also very strongly observed in Poland, Russia, Belarus, Germany, Netherlands, Ireland, parts of the United Kingdom (Cornwall especially), France, Italy, Malta, Portugal, Spain, Ukraine, other parts of Europe, and elsewhere – such as Canada, the United States, Puerto Rico, and also in the Southern Hemisphere (mostly in Brazil, Argentina and Australia), where this imported European celebration would be more appropriately called “Midwinter”.
Midsummer is also sometimes referred to by some Neopagans as Litha, stemming from Bede‘s De temporum ratione which provides Anglo-Saxon names for the months roughly corresponding to June and July as se Ærra Liþaand se Æfterra Liþa (the “early Litha month” and the “later Litha month”) with an intercalary month of Liþa appearing after se Æfterra Liþa on leap years. The fire festival or Lith- Summer solstice is a tradition for many pagans.
Solstice celebrations still centered on the day of the astronomical summer solstice. Some choose to hold the rite on June 21, even when this is not the longest day of the year, and some celebrate June 24, the day of the solstice in Roman times.
Although Midsummer is originally a pagan holiday, in Christianity it is associated with the nativity of John the Baptist, which is observed on the same day, June 24, in the Catholic, Orthodox and some Protestant churches. It is six months before Christmas because Luke 1:26 and Luke 1.36 imply that John the Baptist was born six months earlier than Jesus, although the Bible does not say at which time of the year this happened.
In Estonia, Latvia, Lithuania and Quebec (Canada), the traditional Midsummer day, June 24, is a public holiday. So it was formerly also in Sweden and Finland, but in these countries it was, in the 1950s, moved to the Friday and Saturday between June 19 and June 26, respectively.
In Wicca, practitioners celebrate on the longest day and shortest night of the year which has not had a set date since the retirement of the 13-month Celtic calendar.
Reference Source: https://en.wikipedia.org/wiki/Midsummer
Midsummer is the religious celebration held at the summer solstice. This feast usually falls around June 20-21. Midsummer-related holidays, traditions and celebrations are found in all the Germanic countries of Northern Europe. Midsummer’s eve is considered the second greatest festival of the Germanic holy year, comparable only to the 12 days of Yule.
The Summer Solstice is an astronomical term regarding the position of the Sun in relation to the celestial equator. The Summer Solstice is the date with the longest day and hence with the shortest night. This date usually falls near June 21. At the time of this solstice, the Earth is in that point of its orbit at which the hemisphere in question is most tilted towards the sun, causing the sun to appear at its farthest above the celestial equator when viewed from earth.
Certain celebrations take place on the evening of the summer solstice. Great roaring Bonfires, speeches, songs and dancing are most traditional. Folk traditions include the making of wreaths, the kindling of fires, the burning of corn dollies (human figure made out of straw), and the adornment of fields, barns, and houses with greenery. Midsummer as particularly a time to make blessings to Baldur. Model Viking ships are also sometimes made out of thin wood, filled with small flammable offerings, and burned at this time. Midsummer is the high point of the year, the time when deeds are brightest and the heart is most daring. This is the time when our Viking forebears, having their crops safely planted, sailed off to do battle in other lands. It is a time for action and risk, for reaching fearlessly outward.
Other traditional events include raising and dancing around a huge phallic maypole. Before the maypole is raised, greens and flowers are collected and used to cover, to “may”, the entire pole. Raising and dancing around a maypole to traditional music is primarily a fertility ritual.
The holiday is considered the time of the death of the Fair God of sunshine, Baldur and thus the turning point at which summer reaches its height and the Sun shines longest, but at the same time it is when the days will soon begin to shorten and the Earth is beginning its slow descent into winter again. It is important to note that midsummer is not the middle of summer. Indeed, summer may be defined to begin with the summer solstice.
Source Reference: http://odinsvolk.ca/O.V.A.%20-%20SACRED%20CALENDER.htm
On Midsummer Night, folklore states that if you sit at a crossroads, elves will attempt to seduce you with food and gifts; there are grave consequences for being seduced by their offers, but great rewards for resisting.
Source Reference: https://en.wikipedia.org/wiki/Hulduf%C3%B3lk