AC 001: Several nations establish permanent space stations in geosynchronous Earth orbit. This is the first year of the After Colony (AC) calendar.

AC 020: The colony A02026 is constructed at Lagrange point 5. This colony will later become the home of the fierce and mighty Long clan when they are exiled from Earth by their fearful government.

AC 022: Space colony construction begins at Lagrange point 1. Due to unexpectedly severe conditions and strange new diseases, construction is greatly delayed.

AC 050: Nations begin withdrawing from space, until the countries of the Middle East - leaving the oil industry and looking for a new enterprise to invest in - join the colony project. Colony construction begins at the other Lagrange points.

AC 070: Due to scarce resources and limited supplies from Earth, disputes break out at each Lagrange point. The Middle Eastern nations intercede and negotiate an end to the conflicts.

AC 087: The colony V08744 is constructed at Lagrange point 2.

AC 102: An Island 2 type colony is completed at Lagrange point 1 (L-1). With this success achieved, the colony project goes on to construct population centers composed of multiple colonies, popularly known as "colony clusters." On Earth, international disputes continue to escalate. Civilians flee the conflict by emigrating to the colonies, and soon 15% of the human population is living in space.

AC 130: With Earth's territorial lines redrawn, the conflicts die down.

AC 133: In the process of negotiating a lasting peace between the warring nations, the "United Earth Sphere Alliance" is established. In order to keep the peace - and deal with nations that oppose the new world government - the Alliance Forces are formed. One of the Alliance's key financial supporters is the military-industrial combine called the Romefeller Foundation.

AC 140: One by one, Earth's nations join the Alliance. As their mother countries join, the colonies are also enrolled, willing or not. The colonies are critical of the Alliance and its intentions, and the Alliance decides to respond with force in order to silence its critics.

AC 147: In the name of peace and justice, the Alliance invokes the authority of its member nations to forcibly seize control of the colonies.

AC 149: The Alliance assembly transfers control of the previously-independent colonies to the mother countries that originally constructed and settled them. These nations then kindle a new colony emigration boom.

AC 150: The colonists, favoring autonomy, become increasingly dissatisfied with Alliance control.

AC 165: In order to peacefully oppose the Alliance, the citizens of the colonies elect Heero Yuy as their representative. His charismatic leadership strengthens solidarity between the colonies. In order to peacefully oppose the Alliance, the citizens of the colonies elect Heero Yuy as their representative. His charismatic leadership strengthens solidarity between the colonies. In order to peacefully oppose the Alliance, the citizens of the colonies elect Heero Yuy as their representative. His charismatic leadership strengthens solidarity between the colonies.

AC 170: Colony leader Heero Yuy's policies of demilitarization and non-violence are well-received by many of Earth's nations.

AC 173: OZ, a subsidiary of the Romefeller Foundation, begins development of humanoid weapons known as "mobile suits."

AC 174: Colony leader Heero Yuy makes a goodwill tour of Earth's nations, laying the groundwork for colonial independence.

AC 175: Scientists Doctor J, Professor G, Doktor S, Instructor H, Master 0 and Howard complete the first combat-ready mobile suit. This prototype Leo is also known as the Tallgeese. On April 7, colony leader Heero Yuy is assassinated by an unknown gunman. The leaderless colonies are thrown into chaos, and the Alliance plans a second military intervention. In reaction to the assassination, the Tallgeese developers quit the mobile suit project and disappear. The Romefeller Foundation's OZ subsidiary becomes a secret society.

AC 176: The Romefeller Foundation's OZ subsidiary begins production of a scaled-down version of the mobile suit Leo. Source: Encyclopedia of Gundam Wing The Alliance forms its first mobile suit force, the Special Mobile Suit corps or "Specials." The Specials, made up of Romefeller Foundation employees, are essentially a front for the secret society OZ. Under the pretext of suppressing the chaos in the colonies, the Alliance again sends in the military. Mobile suits are first used in combat. All colonies are placed under military supervision, and communication between colonies is prohibited to prevent future collaboration.

AC 180: Doctor J, Professor G, Doktor S, Instructor H and Master 0 design the Wing Gundam Zero. OZ discovers their whereabouts, and they are forced to end their collaboration, split up and go underground. OZ begins development of the "Zodiac" series of mobile suits, which eventually includes the Tragos, Aries, Pisces and Cancer. Source: Encyclopedia of Gundam Wing Quatre Raberba Winner is born. Unlike his 29 sisters, he is born naturally rather than being a test-tube baby. Though genetic engineering has largely solved the reproductive complications that plagued the previous century's space colonists, the Winner family objects to this engineering on religious grounds; Quatre's mother dies in childbirth. Father Winner never tells his son of the circumstances of his birth, instead letting Quatre believe that he is a test-tube baby like his sisters.

AC 182: The Alliance decides to stage a military intervention in the Sanc Kingdom, an advocate of Heero Yuy-style total pacifism. The capital falls in one day. King Peacecraft is killed; Princess Relena is rescued and adopted by his trusted aide Darlian, while Prince Milliardo's whereabouts are unknown. Conflict breaks out in Eastern Europe. The Bloom family's wagon is caught in the crossfire between Alliance forces and rebels; Katherine Bloom (age 4) survives, but her parents and her baby brother Triton (age 2) are believed to be killed. Katherine is taken in by her parents' circus troupe.

AC 187: A virus breaks out at L2's V08744 colony. An antidote is developed, but is not provided to the poorer and less desirable colonists. Among the unwanted is a gang of orphans led by a boy named Solo; a member of his gang steals the antidote from an Alliance base, but too late to save Solo. Dying, Solo promises to be with his friend forever, and the seven-year-old boy thus adopts the name "Duo." Though Duo didn't get enough antidote for himself, he never contracts the virus, and attributes this to Solo's watching over him.

AC 189: L3's X18999 colony is completed. Mariemeia Barton is born here; her mother is Leia Barton, and her father's identity is unknown. Zechs Merquise and Lucrezia Neun graduate from the Specials' Lake Victoria academy, with the highest and the second highest marks in the academy's history, respectively.

AC 190: On Earth, a nameless ten-year-old boy fights against the Alliance as part a team of mercenary mobile suit pilots. His team is wiped out in a failed ambush, its location betrayed by an Alliance spy. The spy is revealed to be a girl named Middie Une, traveling with the mercenary corps, who spies to support her sick father and three brothers.

AC 191: At X18999, Leia Barton dies of an illness. On April 8, terrorists steal prototype Aries mobile suits from the Alliance's JAP point base. General Catalonia, commander of the Specials (and leader of the secret society OZ), dispatches Treize (age 19) and Zechs (age 15) to quash the rebellion. A terrorist captures eleven-year-old Relena Darlian, daughter of the Alliance's vice-minister for foreign affairs, and holds her hostage; she is rescued by Zechs. Zechs, in actuality Milliardo Peacecraft of the Sanc Kingdom, recognizes his long-lost sister but does not reveal his identity to her.

AC 192: Howard and Professor G, both members of the salvage organization known as the Sweeper Group, complete the huge space ship Peacemillion and hide it on the lunar surface. Howard then goes to Earth to work aboard a salvage ship, while Professor G and his Sweeper cohorts remain in space. On the return trip, the Sweepers discover a stowaway and bring him before Professor G. The stowaway gives his name as "Duo Maxwell." Professor G replies, "What, like Maxwell's Demon?" - to which Duo responds, "I'm no demon, I'm the god of death!"

AC 193: Treize Khushrenada becomes leader of the secret society OZ, and commander of the Specials. A shuttle carrying Quatre Raberba Winner is hijacked by a gang of renegades known as the Maganac Corps. Using the Winner family's captured ships, and with the tacit blessing of father Winner, the Maganac Corps plan to ferry workers from the resource satellite MO-III back to their families on Earth. Unwilling and unpaid, the MO-III workers have become virtually prisoners on the satellite. Feeling an affinity for the warm-hearted and closely-knit Maganac Corps, who are all test-tube babies as he believes himself to be, Quatre helps them in their rescue mission. He saves Maganac leader Rasid from a traitor and fights off Alliance forces to guard their escape, winning the Maganac Corps' eternal respect and gratitude. The Maganac Corps escort the rescued workers to Earth, while Quatre brings Instructor H back home with him.

AC 194: Treize Khushrenada becomes leader of the secret society OZ, and commander of the Specials. A shuttle carrying Quatre Raberba Winner is hijacked by a gang of renegades known as the Maganac Corps. Using the Winner family's captured ships, and with the tacit blessing of father Winner, the Maganac Corps plan to ferry workers from the resource satellite MO-III back to their families on Earth. Unwilling and unpaid, the MO-III workers have become virtually prisoners on the satellite. Feeling an affinity for the warm-hearted and closely-knit Maganac Corps, who are all test-tube babies as he believes himself to be, Quatre helps them in their rescue mission. He saves Maganac leader Rasid from a traitor and fights off Alliance forces to guard their escape, winning the Maganac Corps' eternal respect and gratitude. The Maganac Corps escort the rescued workers to Earth, while Quatre brings Instructor H back home with him.

AC 195: Operation Meteor is initiated.