The Harmonic Convergence is the name given to the world's first globally synchronized meditation, which occurred on August 16–17, 1987, which also closely coincided with an exceptional alignment of planets in our solar system (see #Astrological alignment below).
The timing of the Harmonic Convergence was allegedly significant in the Maya calendar, with some consideration also given to European and Asian astrological traditions. The chosen dates have the distinction of allegedly marking a planetary alignment with the Sun, Moon and six out of eight planets being "part of the grand trine."
The event had been predicted by author Tony Shearer in his book Lord of the Dawn (1971). One of the principal organizers of the Harmonic Convergence event was José Argüelles. According to Argüelles' interpretation of Mayan cosmology, the selected date marked the end of twenty-two cycles of 52 years each, or 1,144 years in all. The twenty-two cycles were divided into thirteen "heaven" cycles, which began in AD 843 and ended in 1519, when the nine "hell" cycles began, ending 468 years later in 1987. The very beginning of the nine "hell" cycles was precisely the day that Hernán Cortés landed in Mexico, April 22, 1519 (coinciding with "1 Reed" on the Aztec/Mayan calendar, the day sacred to Mesoamerican cultural hero Quetzalcoatl). The 9 hell cycles of 52 years each ended precisely on August 16-17, 1987.
Astrological alignment 
According to Neil Michelsen's "The American Ephemeris," on 24 August 1987 there was an exceptional alignment of planets in the solar system. Eight planets were aligned in an unusual configuration called a grand trine.
The Sun, Moon and six out of eight planets formed part of the grand trine, that is, they were aligned at the apexes of an equilateral triangle when viewed from the Earth.
The Sun, Moon, Mars and Venus were in exact alignment, astrologically called a conjunction at the first degree of Virgo in Tropical Astrology. Mercury was in the fourth degree of Virgo which most astrologers count as part of the same conjunction being within the "orb" of influence. Jupiter was in Aries, and Saturn and Uranus in Sagittarius completing the grand trine. However some believe that this is an Earth Grand Trine with Sun/Moon/Mars/Venus/Mercury in the initial degrees of Virgo, Neptune at 5 degrees of Capricorn, and Jupiter in the last degree of Aries (anaretic degree), on the cusp of Taurus. Uranus, and especially Saturn are on the edge of this trine.
Controversy is associated to the claim that this occurrence was a unique event. Grand Trines, where planets are at 120 degree positions forming an equilateral triangle are not uncommon or particularly noteworthy. Traditional Astrology does not consider Trines to be action points, so the notion of a special shift in world history would not be in the offing under a Grand Trine. Hence, many traditional astrologers do not regard this occurrence to be of significant importance.
Astrological interpretations 
The convergence is purported to have "corresponded with a great shift in the earth’s energy from warlike to peaceful."
Believers of this esoteric prophecy maintain that the Harmonic Convergence ushered in a five-year period of Earth's "cleansing", where many of the planet's "false structures of separation" would collapse.
According to Argüelles, the event came at the end of these "hell" cycles and the beginning of a new age of universal peace. Adherents believed that signs indicated a "major energy shift" was about to occur, a turning point in Earth's collective karma and dharma, and that this energy was powerful enough to change the global perspective of man from one of conflict to one of co-operation. Actress and author Shirley MacLaine called it a "window of light," allowing access to higher realms of awareness.
According to Argüelles, the Harmonic Convergence also began the final 25-year countdown to the end of the Mayan Long Count in 2012, which would be the so-called end of history and the beginning of a new 5,125-year cycle. Evils of the modern world, e.g. war, materialism, violence, abuses, injustice, oppression, etc. would end with the birth of the 6th Sun and the 5th Earth on December 21, 2012.
Power centers 
An important part of the Harmonic Convergence observances was the idea of congregating at "power centers." Power centers were places, such as Mount Shasta, California, and Mount Fuji, where the spiritual energy was held to be particularly strong. The belief was that if 144,000 people assembled at these power centers and meditated for peace, that the arrival of the new era would be facilitated.
See also 
- "Harmonic Convergence: Why Report It With Such Disrespect?". The Washington Post. Aug 22, 1987. Retrieved 2009-04-28.
- Todras-Whitehill, Ethan (April 29, 2007). "Touring the Spirit World". New York Times. p. 3. Retrieved 2009-06-29.
- Anderson, Lisa (August 19, 1987). "Getting Cosmic With Shirley". Chicago Tribune. Retrieved 15 February 2013.
- "144,000 Needed to Establish Field of Trust". Times Daily. Aug 15, 1987. Retrieved 2010-03-31.
- "Harmonic Convergence". College of the Siskiyous. 1989. Retrieved 2010-03-31.
- "Convergers Seek harmony". Reading Eagle (from Associated Press and United Press Intl.). Aug 15, 1987. Retrieved 2010-03-31.
- Adapted in part from the Wikinfo article Harmonic Convergence, licensed under the GNU Free Documentation License.
An esoteric explanation for the Harmonic Convergence based on the Mayan Calendar time cycles>>> The REAL Reason for the Harmonic Convergence in the Mayan Calendar