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15,999,997,624-
Date of Event One as calculated by Federation
scientists in the twenty-fourth century CE.
(Star Trek: Voyager)
13,500,017,903-
Proprieters of Milliways, the Restaurant at
the End of the Universe, establish the Big Bang Burger Bar at this point,
transported from the far future and held in a stable region of artificial
sub-space which protects its patrons from the radiation and other forces
existing at this time. Time travellers from the future may visit the Burger
Bar and witness the birth of the Universe as often as they like, without
ever meeting themselves. (This is ofcourse completely impossible.) They
may also deposit funds in a special account, then journey back to their
native times and reap mega-fortunes in accrued compound interest. (This
is also completely impossible.)
(The Hitchhiker's Guide to the Galaxy)
Event One as observed by the Time Lords. The
universe begins as a singularity of condensed, superheated plasmic matter,
which begins to expand outward in an explosion which continues for billions
of years (colloquially and somewhat inaccurately referred to as the "Big
Bang"). Two forces, one good, one evil, are born at this moment. The evil
force lives on, while the fate of the good force remains unknown. The Leptonic
Era, the first age of the universe, begins, as the precursors of the first
matter and energy particles form. Many rare and unstable elements such
as helium-3 are present, but are lost as the universe and its physical
laws continue to take shape.
(Doctor Who)
Time and Space as we know them take form and
expand outward with the universe. While many colloquially see Time as structured
like a string, a more accurate model would be of string which is bundled
together into a ball. "Time travel" is then essentially the process of
leaping back and forth between the points on the string. This axiom forms
the basis for the "string theory" of Dr. Sam Beckett, who will use it in
his Quantum Leap Project on twentieth-century Earth.
(Quantum Leap)
Recovered from his injuries and having failed
in his original plan to destroy the various versions of Earth and absorb
their energy, the Anti-Monitor arrives to undo the birth of Time and
prevent Creation itself. The heroes from six different Earths arrive,
led by the Spectre. The heroes, thanks to the Spectre and other mystic
heroes such as Dr. Fate, Thunderbolt, Phantom Stranger and Zatanna, keep
the Anti-Monitor from winning his cosmic arm-wrestling match with the Spectre.
The Spectre wins and all future history is reset, with the Multi-Earths
being merged into one reality.
(DC Universe - Crisis on Infinite Earths)
Schletzhold’s Postulate theorizes that the
Universe may have originated from a series of multiple
“Big Bangs.”
(Star Trek: Voyager)
The Federation starship Voyager is brought
to this time from the 24th century CE by the Q entity
Quinn, and is nearly torn apart by the titanic
forces present.
(Star Trek: Voyager)
The Garm, an ursine species from the previous
universe, arrive in this time period. Their gigantic ship, Terminus, is
forced to dump its fuel into the unstable void of the infant universe and
attempt a time jump. Terminus is thrown billions of years into the future
to the center of the universe. Its fuel reacts with the proto-elements
present and creates the first basic stable atoms.
(Doctor Who)

As the universe takes form, the Black and White
Guardians come into being. One seeks to preserve the order and harmony
of the universe; the other seeks to cast it into eternal chaos. Time Lords
from the previous universe also appear, having used time travel technology
to escape the destruction of the previous universe. They find they have
omnipotent powers owing to the differing physical laws of this universe,
and become the Great Old Ones. One Great Old One, Saraqazel, ventures even
further, into the next universe after this one. The Eternals, omnipotent
beings from beyond time and space who have no concept of good or evil,
also appear in our universe about this time.
(Doctor Who)
Also brought to this reality from the previous universe is a humanoid
from the Planer Taa Group. Mutated by the new physical laws and powerful
energies present, he eventually mutates into Galactus, a gigantic being
of immense powers who feeds on the life force of entire worlds to sustain
himself.
(Marvel Comics - The Fantastic Four)
13,500,007,903-
The Leptonic Era ends. The universe settles
into its present homogenous state.
(Doctor Who and cosmological theory)
Forseeing that periods of chaos will beset
the new Universe, the White Guardian creates the Key to Time, a device
which has powers of transformation and teleportation, and also the ability
to manipulate time itself. To prevent his opposite from using the device
to increase the level of chaos in the Universe, the White Guardian splits
the key into six segments and scatters them throughout space and time.
The Black Guardian sets the mysterious entity known as the Shadow at the
beginning of time to wait for the moment when the six segments will be
reunited.
(Doctor Who)
12,500,015,923-
Uneven distribution of matter leads to the
formation of “lumps” which will eventually form into the first galaxies.
(Cosmological theory)
11,999,997,734-
The first galaxies begin to form.
(Cosmological theory)
11,999,991,997-
Metachloreans, the first corporeal life-forms,
appear. These sub-microscopic creatures prove vital to the existence of
other corporeal forms, helping them to interact with the pranic energy
known as "the Force."
(Star Wars)
11,249,547,500-
The first civilizations appear in the Universe,
with most being quickly destroyed by the unstable physical and/or social
conditions existing at this time.
(Doctor Who)
Kryptonian records speak of this period as
“a bloody mosaic of interplanetary war.”
(Superman, The Movie)
11,499,975,005-
The first humanoid civilization appears near
the edge of the universe.
(Doctor Who)
11,499,965,005-
The first humanoid civilization destroys itself
in a bacteriological war. Some surviving refugees escape to seek
a new home. Around the same time, the mysterious and immortal being known
as the gray man constructs the Cathedral, a device which generates
uncertainty throughout the Universe, and its power-source, the Metahedron.
(Doctor Who)
11,499,885,005-
The Metahedron moves to a new location in
the Universe, and will continue to do so every
eighty-thousand years.
(Doctor Who)
9,999, 998,070-
Date of Event One as originally suggested
by Georges Lemaitre’s “Big Bang” theory.
(Cosmological theory)
9,999,998,061-
A race of blue-skinned, highly-intelligent,
short-statured humanoids evolve and begin building a civilization on the
planet Maltus.
(DC Universe - Green Lantern)
9,999,998,035-
Date of Event One as suggested by Allan Sandage’s
“Pulsating Universe” theory.
(Cosmological theory)

9,999,998,019 -
Earth’s galaxy forms out of a huge inrush
of hydrogen. Sabotaged by the Master, the Doctor’s TARDIS narrowly averts
being sucked into the vortex.
(Cosmological theory and Doctor Who)
9,999,798,039 -
A group of Maltusians with superior intellect
and mental powers emigrate to Oa, a planet in the center of the known universe.
(DC Universe - Green Lantern)
8,434,710,200-
While travelling with the Doctor, Jo Grant
encounters the Methaji.
(Doctor Who)
8,184,005,005-
The Metahedron moves to another location in the Universe.
(Doctor Who)
7,999,998,438-
The Watchers, a race of humanoid giants possessed
of great power and wisdom, begin travelling the Universe, secretly observing
and recording the affairs and activities of other races but foresworn to
never interfere.
(Marvel Comics - The Fantastic Four)
7,933,332,338-
On Marinus, a planet with acid seas and beaches
of glass, a thinking super-computer called the Conscience of Marinus is
built which maintains peace on the planet for 700 years.
(Doctor Who)
7,933,331,638-
The Keys of the Conscience of Marinus are
scattered to prevent their falling into the hands of the Voords.
(Doctor Who)
7,933,330,338-
The Doctor, Susan, Ian, and Barbara land on
the planet Marinus. The Keeper holds the TARDIS captive and forces its
crew to find the seven keys to the Conscience of Marinus. The Doctor and
his companions succeed in the task, but not before the Voords have killed
the Keeper and seized control of the Conscience chamber. The Conscience
Machine is destroyed and the TARDIS crew escapes the planet.
(Doctor Who)
7,649,925,005-
The Metahedron moves to another location in the Universe.
(Doctor Who)
7,366,663,671-
The oceans of the planet Aridius begin to
dry up. Aridius eventually becomes a desert world, with its inhabitants
living underground and fighting off attacks by the Mire Beasts.
(Doctor Who)
7,366,085,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
7,365,663,671-
The Doctor, Ian, Barbara, and Vicki arrive
on Aridius, only to find themselves being hunted by time-travelling Daleks.
With the help of the Aridians, they are able to escape, but the Daleks
quickly pursue them through time.
(Doctor Who)
7,357,805,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
7,350,006,952-
Life evolves on the planet Gallifrey in the
constellation of Kasterborus. Soon afterwards, descendants of refugees
from the first humanoid civilization colonize the planet. They are the
ancestors of the Time Lords.
(Doctor Who)
7,050,085,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
6,750,163,797-
The Doctor has his first encounter with the
Eternal known as the Celestial Toymaker, but is able to escape his clutches.
(Doctor Who)
6,750,163,681-
The Doctor is once again captured by the Celestial
Toymaker, this time together with his companions Dodo and Steven. The Doctor
is forced to play the Toymaker’s trilogic game, while Dodo and Steven are
forced to play various games with different inhabitants of the Toymaker’s
realm; failure will render them his slaves. Steven and Dodo manage to win
all the games, while the Doctor is able to imitate the Toymaker’s voice
to retrieve the TARDIS. The time travellers escape.
(Doctor Who)
6,750,084,849-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
6,750,006,952-
Around this time, the inhabitants of Gallifrey
master the use of the transmat, which their descendants later consider
a “simple device.”
(Doctor Who)
6,750,006,718-
Gallifreyans begin to experiment with tachyonics.
(Doctor Who)
6,750,006,368-
Gallifreyans abandon tachyonics when they
develop warp-matrix engineering. They begin to build a vast intergalactic
empire.
(Doctor Who)
6,491,645,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
6,233,365,437-
The humanoid race known as the Dominators
develop warp drive and, assisted by their Quark robots, begin building
an empire which eventually spans five galaxies.
(Doctor Who)
6,233,330,506-
In the time of Olin, a nuclear device completely
destroys a city on an island on the planet Dulkis.The Dulkans completely
abandon war and become a peace-loving race.
(Doctor Who)
6,233,330,334-
A Dominator ship arrives on Dulkis, and begins
drilling into the planet’s surface with the goal of turning its core into
a reactor pile to power their war-fleet. With the help of their Quark robots,they
are able to enslave a small group of Dulkans. The Doctor, Jamie, and Zoe
arrive and are able to free the Dulkans and destroy the Dominator drilling
site, releasing a volcanic eruption which destroys the Dominator scout
ship and its crew.
(Doctor Who)
6,116,645,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
6,001,421,474-
The Gallifreyan Empire conquers the Pen-Shoza.
(Doctor Who)
5,999,997,733 -
A living time portal, the Gaurdian of Forever,
is built by an unknown race on a planet in the Alpha Quadrant. It survives
until at least the late 23rd century CE.
(Star Trek)
5,833,245,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
5,666,673,355-
A Kroton ship crashlands on the planet Gond.
Needing energy to repair their ship, the Krotons provide some of their
technology to the Gond people. In exchange they take the brightest
members of Gond society in pairs, extract their minds to feed their ship,
and destroy the bodies.
(Doctor Who)
5,666,663,664-
The Doctor, Jamie, and Zoe arrive on the planet
Gond, and find its inhabitants under the thrall of the Krotons. The Doctor
determines that Kroton biochemistry is based on tellurium and introduces
sulphuric acid into their ship’s organic interface, killing the Krotons,
destroying their ship, and freeing the Gonds.
(Doctor Who)
5,643,245,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
5,619,872,903-
While travelling with the Doctor, Jo Grant
encounters the Hoveet.
(Doctor Who)
5,436,325,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
5,252,835,995-
The Gallifreyan Empire conquers the Jagdagian.
(Doctor Who)
5,176,405,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
5,099,996,992-
The Doctor is captured by the Medusans who
hook him up to a mind probe, which will inflict pain if he lies. After
the Doctor truthfully tells the Medusans that he is on his way to see a
six-foot rabbit and a purple unicorn, the mindprobe shorts out. The exotic
creatures are in fact delegates at an interplanetary conference.
(Doctor Who)
5,002,565,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)
4,999,997,733 -
Earth’s sun forms.
(Cosmological theory)
4,999,997,628-
The female Q entity with whom Q later mates
claims to have been "born" around this time.
(Star Trek: Voyager)
4,999,997,046-
The Solar System begins to condense out of
a disk of gas and dust orbiting the Sun.
(Cosmological theory)
4,799,925,005-
The Metahedron moves to another location in
the Universe.
(Doctor Who)