Some wars and rebellions, like the First Sioux Wars of 1854 and the 1903 Transfiguration Uprising in Eastern Thrace, and some seemingly small events that had significant repercussions, like the results of a German referendum that approved Hitler as the Führer – 19 August as a date is not without interesting history. However, for the thousands of people who on 19 August gather, dressed in white, above Babreka Lake in the Rila mountains, the date holds special importance. The members of the White Brotherhood believe that on this date begins what the teaching's founder, Peter Deunov, called the Spiritual New Year. They celebrate by dancing slowly in huge concentric circles to the accompaniment of old-fashioned violin music.

Supporters of the Universal White Brotherhood liberally quote Albert Einstein as having said that while the whole world admired him, he admired one Bulgarian, Petar Deunov. There is no record of Einstein having ever said that in actual fact, but the Universal White Brotherhood, founded by Peter Deunov at the end of the 19th and the beginning of the 20th centuries, is the most popular spiritual teaching to emerge from Bulgaria since medieval Bogomilism. At present it has adherents worldwide, including France, Japan and the United States.

Peter Deunov (1864-1944) proffered an occult mixture of ideas for spiritual, mental and cardiac development, and of resuscitation of the body. He considered God to be a pantheist deity, while Christ was an occult teacher and the leader of an universal brotherhood. The universe was the home to angels, archangels and other supernatural creatures and forces, and human souls got reborn. Deunov considered the white race to be superior as it was the most developed in comparison to all others. It was the final evolution step before the attainment of a hypothetical "sixth," "supreme race." To achieve perfection, all human souls had to be reborn as white people.

To support his teachings, Deunov used astrology, numerology, phrenology, palmistry and graphology.

The choreography of Paneurhythmy is complex and requires dancers to concentrate not only on the movement, but also on their thoughts and an "intelligent conversation between human beings and nature"

The followers of Deunov practise their faith by meeting, usually at open spaces and at sunrise, reading Deunov's works and dancing a circular dance Deunov called Paneurhythmy. Created after 1927, the dance is supposed to combine light physical exercise with music, thought and word into a philosophical whole that will keep one healthy and in harmony with nature. The dance has three parts: "28 Exercises," "Sun Rays" and "Pentagram," each with its specificities, philosophy and length. It is performed between 22 March and 22 September. The music was composed by Deunov himself. To the outsider, Paneurhythmy uncannily looks like aerobics... in the 1920s.

Deunov's ideas appeared at a time when esotericism fell on fertile ground all over the world. Spiritist seances were in vogue, the teachings of the Orient tickled the imagination, and people sought novel ways to satisfy their spiritual needs.

Hundreds of followers of Peter Deunov's philosophy gather at the Seven Rila Lakes area to celebrate the Spiritual New Year

It is not very clear how and why Peter Deunov laid the foundations of his teachings. In 1888-1895 he studied medicine and theology in the United States. In 1896 he published a book where he referred to the development of mankind into a "new culture" that was supposed to make itself known in the 20th century.

As early as 1897 he had a group of like-minded followers. That same year he founded his Association for the Elevation of the Religious Spirit of the Bulgarian Society. This was the beginning of what would evolve into the Universal White Brotherhood, in 1918. Deunov, whom his followers called Beinsa Douno or simply The Teacher, would go on travelling Bulgaria and giving thousands of talks in a bid to attract new followers.

Deunov claimed that light was the condensed divine thought and different colours could heal different ailments. According to his teachings, the colour white embodies "the law of right giving" and evokes generosity and abundance

His preachings for brotherhood and universal love, a new morality and a soul revival through spiritual evolution fell on understanding and sympathetic ears in a Bulgaria devastated by two Balkan and one world war that resulted in a couple of national catastrophes. His charisma played an important role in the rising popularity of the White Brotherhood. In contrast to other religious leaders, he appeared to actually live by his teachings and commandments. In the 1920s his reputation as a seer and healer gained him an almost saint-like status. The Bulgarian Orthodox Church was quick to respond. In 1922 it excommunicated Deunov and declared his teachings a heresy.

The excommunication had little impact on the popularity of Deunovism. In the 1930s and 1940s the White Brotherhood expanded its outreach as it established contacts with other fringe groups, including the associations of the Esperanto speakers, of the vegetarians and of the abstainers. Deunov's meetings were attended by members of the establishment and King Boris III was also in touch. According to one hypothesis, the true saviour of Bulgaria's Jews from the Holocaust was Peter Deunov who had threatened the superstitious king who subsequently ducked.

The tomb of Peter Deunov in the Izgrev, or Sunrise, neighbourhood in Sofia. The neighbourhood is named after the White Brotherhood commune he founded there

Peter Deunov died in 1944, just a few months after the Communists seized power. He was buried in a small park in the Izgrev area of Sofia where he had set up a residential community for his followers. Later, the government expropriated that community's properties and had the USSR embassy built on its site. Deunov's tomb, however, was left untouched. Through all the years of Communism it was carefully tended to. Perhaps the reason for this is a curious fact in Peter Deunov's life. In the 1920s he was a neighbour of Georgi Dimitrov, who went on to become an associate of Stalin and later Bulgaria's first Communist dictator. Deunov was kind to him and even provided a safehouse for him on several occasions.

Deunovism is on the rise in the 21st century. Its grandest manifestation is on 19 August. The reason why followers from all over the world gather to perform Paneurhythmy at Babreka Lake is that Deunov considered the location charged with energy, a vortex.