Based on story and visuals, as well as the long descriptions on my fics set in that world and dates older documents such as my artwork, I have made an approximate timeline in the Human World. Does foreshadow upcoming works.

I may altar this a little as time goes by critique: It's when I accounted for their birthdays when things became a little tricky.

65.5 million years BCE +/- 500 G: Amongst heavy volcanic activity, a meteor the size of Mount Everest struck the Gulf Coast, wiping out all the dinosaurs, except two Dakotaraptors. According to Ms. Moynihan, the impact of the asteroid triggered a response in the earth that put them in a state of suspended animation, gradually manipulating their DNA until they could gain the ability to transform into a human form.

3500 BCE: Scarab kills Rapses before later being imprisoned. Ja-Kal, Rath, Armon, and Nefer-tina placed into a deep sleep.

18 BCE: The Dazzlings are banished to the Human World.

1933

October 6th: Tremor is born

1949
September 16th: Sue Thunderfoot is born

1950
October 15th: Granny Smith is born

August 25th 1950- July 27th 1953
Tremor’s service term for the Korean War

1954
September 16th: Sue Thunderfoot is born

1964
April 4th: Lion Tamer is born

1965
November 4th: Loopty Hoop is born

1969
October 14th: Clamp Jaw is born

1970
March 20th: Claire is born

1974
April 14th: Ember is born

December 8th: Jetfire is born

1975
June 20th: Celestia is born

1977
December 22nd: Luna is born

1979

May 12: Blue Permain Apple is born

December 6th: Seville Orange is Born

1985

September 18th: Presley Carnovan is born

1986

October 20-23: Tambelon High closed down, Grogar reported missing (presumed dead).

November 19th: Night Dancer is born

1994

September 30th: Janey is born

1995

January 7th: Cheerilee is born

September 26th: Hooflock is born

October 30th: Big Mac is born

1996

October: Jetfire and Ember begin to expect their child.

1997

January: Hydia offers not to arrest Jetfire in exchange for his first child.

January 21st: Derpy is born

February 1st: Rainbow Dash is born

February 12th: Twilight Sparkle is born

February 16th: Crescendo is born

March 27th: Rarity is born

March 31st: Applejack is born

April 29th: Fluttershy is born

May 2nd: Flash Sentry is born

June 16th: Sunset Shimmer is born, then subsequently being put up for adoption as agreed between Jetfire and Hydia.

July 19th: Pinkie Pie is born

September 27th: Ja-kal, Rath, Armon, and Nefer-tina are reawakened, revealing to Presley that he is the descendant of Prince Rapses.

November 19th: Trixie is born

1999

January 7th: Scootaloo is born

February 7th: Indigo Blue is born

March 11th: Zipper is born

March 24th: Rumble is born

March 31st: Featherweight is born

April 24th: Sweetie Belle is born

July 20th: Chelsey is born

August 4th: Button Mash is born

August 24th: Cogsworth is born

August 24th: Diver is born

September 7th: Apple Bloom is born

October 3rd: Pipsqueak is born

November 7th: Cosgrove is born

November 24th: Babs Seed is born

December 24th: Dinky is born

2000

March 15th-25th: Jetfire is killed in a factory accident, Ember falls into depression before committing suicide.

(Exact date unknown, never asked out of respect from surviving relatives): Blue and Ceville Apple reported dead.

2005

April 15th: Golden Caramel is born

May 22nd: Sunset finds a secret exit along the wall, Thunderfoot family moves into Estes Park, Cosgrove meets Chelsey, Dapplewood is born.

June 4th: Night Dancer is introduced to the Thunderfoot family.

August 1st: Cosgrove, Night Dancer, Chelsey, and Dapplewood meet with Sunset Shimmer.

August 20th: Apple Neighborhood party, Schnookums is found and adopted.

August 22nd: Cosgrove's first school day at Great Valley Drive Elementary, Zipper is introduced, Sunset introduces Flash Sentry, Hooflock, and Crescendo.

2006

October 20th: Dapplewood begins education of sign language under the Syrup family.

October 31st: Sunset, Chelsey and Zipper stay at the Syrup residence, learning about sign language for the first time.

2007

March 30: Diver is seen for the first time to the others, Sunset makes first use of the Deadly Nightshade.

September 13th: Victor Veloci dumps improved experimental DNA into Kittery Point Bay. Ms. Moynihan forms the Dino Squad composed of Rolf Maxwell, Erwin Caruso, Fiona Flagstaff, Roger Blair, and Neil Buzmati after they (and a dog they name Rump) get covered in experimental DNA, allowing them the ability to transform into dinosaurs.

2008

August 5th: Cosgrove, Chelsey, Zipper, and Diver are referenced to work at Sweet Apple Acres. Cosgrove remaining to work at Sweet Apple Acres

August 16th: Cosgrove introduces the kale and bison stew recipe to the Apple Family.

August 19th: They find out about Sunset's domestic life and report it to Clamp Jaw.

August 20th: Sunset is placed in foster care under Night Dancer.

September 3rd: Sunset finds out the whereabouts of her parents. Night Dancer chooses to adopt Sunset.

2012

November 24th: Night Dancer confirmed killed in a car accident.

December 2nd: Funeral celebrated.

2013

February: Sunset, Flash, Crescendo, and Hooflock have a falling out.

March: Sunset inherits Night Dancer’s masquerade mask, jacket and boots. After joining for the first time in a few months, fending off the Diamond Dogs away from Turtle Park, Sunset, Cosgrove, Chelsey, Zipper, Diver, and Dapplewood officially form the Maximals.

April: Cosgrove inherits a locket containing a picture of Night Dancer, Dapplewood inherits a pair of new wave glasses, Chelsey inherits a bracelet, Zipper inherits a pair of elbow and knee pads, and Diver inherits a buoyancy reducer.

May: Janey graduates

June: Sunset beats Cosgrove's record at the obstacle course in Sweet Apple Acres.

2014

February: Sunset gives her fellow Maximals an official tour of Canterlot High.

May: Hooflock graduates

July 14: During a vacation at Camp Friendship, Roma Candle leads her group off the hiking trail. It ends in disaster, such as paralyzing Cogsworth from the waist down.

July 16th: Shock Drive and Pinwheel transfer Cogsworth to Crystal Prep.

September 24th-26th: The Pony Twilight enters the Human World for the first time, rallying up the Rainbooms, Crusaders, and Maximals to earn their classmates approval of Twilight.

2015

March 27-28th: Battle of the Bands

July: Dazzlings reformed throughout a Camp Friendship session.

August 25th-29th: The portal leading to The Land Before Time (called the Dinosaur World in Equestria Girls) is opened near the Natural History Museum before, with the help of Princess Twilight, being moved to under the lake in Sweet Apple Acres.

September 5th-6th, 2015

Cera tells Apple Bloom how Three Horns can do anything they can set their minds to.

Rainbow Dash, Scootaloo, Petrie and company skydive with Rarity, Sweetie Belle, Button Mash, and Guido watching on the ground.

September 26, 2015

Pinkie Pie, Diver, the Dazzlings, Ducky, Spike, and Mo go to the swimming pool

October 12-13, 2015

The Friendship Games commenced, ending for the first time in a tie.

The Human Twilight Sparkle transfers to Canterlot High

October 30th, 2015

The Rainbooms, Crusaders, Maximals, and the Gang of Seven teach Trixie a lesson in scaring.

November 1st-7th
A remnant of Victor Veloci's experimental DNA reaches Colorado, mutating several of the Sweet Apple Acres' livestock. Through trophic level, the Maximals' prospective pony forms, with help from gamma radiation, become infused with dinosaur DNA.

November 18th, 2015

Littlefoot’s Star Day is celebrated for the first time in the Human World

Mid November

The Maximals and Crusaders manage to "Pony Up" or "Maximize."

December 10-15
The Anon-a-Miss Fiasco.

2016

January
Dazzlings get their powers back, first tests of the Ground Bridge a Success

February

Apple Bloom confesses about the nature of Anon-a-Miss, Cosgrove mortally wounded.

March-April

Trixie finds the tomb of the Sand Witches

The long conflict between the Guardians of Harmony (Rainbooms, Maximals, and Crusaders) and Bearers of Disharmony (Chrysalis, Sombra, Grogar and the Predacons).

May

Tirek captures the Guardians, who make one last battle against an unknown monster.

The Rainbooms graduate.

Summer 2016

Through a relic hunt test, Cosgrove recruits Snips, Snails, Rumble, Dinky, and Indigo Blue.

Fall-Winter 2016

Anon enters the game.