Two weeks before the 1000th Summer Sun Celebration, Moondancer discovers a forgotten spell scrawled across the pages of an ancient book. Casting it threatens to turns her world upside down: faced with glimpses of an Equestria contradicted by historians, she must use all of her intellect to piece together the mystery surrounding Mage Meadowbrook, Princess Celestia, and the mare with the mane of stars—before the project destroys everything she's worked for.

It's a good thing she can rely on Twilight Sparkle for help.

Spanish Translation from Spaniard Kiwi!

This story is a sequel to Princess Celestia: A Brief History

  When Celestia first laid eyes on Twilight Sparkle, she knew she’d seen her somewhere before. Though she’d managed to hide this from both Sunset and Twilight, after they departed for the evening, Celestia needed to be sure.
  With her trusted aide Raven at her side and a dangerous threat on the horizon, Celestia heads to the offices of the Equestrian Secret Service to investigate her suspicions.
  Because if she’s right, the possibility of eternal night is the least of Equestria’s concerns.

In FimFiction's Feature Box from October 17 to October 21, 2016 with a Hot tag!

Featured on Equestria Daily on October 23, 2016!

Historian’s Note:
In a timeline where the Sonic Rainboom didn’t happen, The Cloudsdale Report occurs directly after the events chronicled in Princess Celestia: A Brief History, which occur the day after The Application of Unified Harmony Magics.

Cast: Princess Celestia, Raven, Philomena, Twilight Sparkle, Sunset Shimmer

Stories set in the Wavelengths Timeline in chronological order:

Origins Arc
The Alchemy of Chemistry
Bards of the Badlands
Grading on a Bell Curve
Habits of the Equestrian Phoenix
How Not To Use Your Royal Prerogative

Applications Arc
The Application of Unified Harmony Magics
Princess Celestia: A Brief History
The Cloudsdale Report

Dreamers Arc
Tactics of Snowbound Unicorns
A Study in Chaos Theory
Teahouses of Saddle Arabia
As the Raven Flies

Cover Design by Amber Spark in Pixelmator
Celestia’s Cutie Mark by BlackGryp0n (Yes, that BlackGryp0n)

Beta Reader Credits
Ebon Quill - Quest Designer on The Manehattan Project
Little Tinker - Master of Systems at Ponyville Live & Scripting Engineer on The Manehattan Project

This story is a sequel to Tactics of Snowbound Unicorns

Harmonic bonds aren't the most predictable of spells. Sunset learned this the hard way with Twilight. Involving Moon Dancer will make things either extremely complicated, or extremely simple.

And that has nothing to do with harmonic bonds.

Knowledge of the previous stories set in the Wavelengths Timeline is suggested, but not required.

Cast: Sunset Shimmer, Twilight Sparkle, Moon Dancer & Princess Celestia
Co-Starring: Coco Pommel, Coloratura, Minuette, Cheerilee and Raven with a special appearance by Philomena as herself.

Historian’s Note:
Set in the Wavelengths Timeline where the Sonic Rainboom didn’t happen, A Study on Chaos Theory occurs about two months after The Cloudsdale Report and three weeks after Tactics of Snowbound Unicorns.

Stories set in the Wavelengths Timeline in chronological order:

Origins Arc
The Alchemy of Chemistry
Bards of the Badlands
Grading on a Bell Curve
Habits of the Equestrian Phoenix
How Not To Use Your Royal Prerogative

Applications Arc
The Application of Unified Harmony Magics
Princess Celestia: A Brief History
The Cloudsdale Report

Dreamers Arc
Tactics of Snowbound Unicorns
A Study in Chaos Theory
Teahouses of Saddle Arabia
As the Raven Flies

Cover Art by OverlordNeon
Cover Text, Chapter Header and Break Designs by Amber Spark
Sunset Shimmer Cutie Mark by MillennialDan
Celestia’s Cutie Mark by BlackGryp0n
MLP Book Vector by SnowedEarth
MLP Magic Aura Vector by AimeeLovesU
Moon Dancer Cutie Mark by AllyCatBlu

Beta Reader & Editor Credits
Little Tinker: Master of Systems at Poniverse & Scripting Engineer on The Manehattan Project
Beltorn: Commenter-at-Large on FimFiction
Cursori: Reader of Many a Pony Word
JayMan155: Artist & Author Extraordiane!
Corejo: Synopsis Combo Finisher

Word Count: 45,000
Version: 3.1

This story is a sequel to Bards of the Badlands

  Sunset hates dealing with chaos surges, no matter how amusing Moon Dancer finds them. After a particularly annoying surge while tutoring Moon Dancer in her advanced telekinetic studies, Sunset takes refuge in the teacher’s lounge. Though she was only looking for a cup of scalding hot tea, Sunset finds a pony walking down the same path she once walked, giving her an opportunity she’s never had before…
  To help somepony not out of guilt, but just because it’s the right thing to do.

Featured on Equestria Daily on September 19, 2016!

Historian’s Note: Set in a timeline where the Sonic Rainboom never happened, Bell Curve occurs in Sunset’s second year as an aide for Professor Apple Polish at Celestia’s School for Gifted Unicorns and several years before the events in The Application of Unified Harmony Magics.

Cast: Sunset Shimmer, Cheerilee, Moon Dancer & Professor Crystal Clear with Philomena as herself.

Stories set in the Wavelengths Timeline in chronological order:

Origins Arc
The Alchemy of Chemistry
Bards of the Badlands
Grading on a Bell Curve
Habits of the Equestrian Phoenix
How Not To Use Your Royal Prerogative

Applications Arc
The Application of Unified Harmony Magics
Princess Celestia: A Brief History
The Cloudsdale Report

Dreamers Arc
Tactics of Snowbound Unicorns
A Study in Chaos Theory
Teahouses of Saddle Arabia
As the Raven Flies

Cover Credits
Cover Design by Amber Spark using Pixelmator
Sunset Shimmer Vector by Midnight-St4r
Cheerilee Vector by J-Brony
Sunset Shimmer Cutie Mark by MillennialDan

Editor & Beta Reader Credits
Ebon Quill - Worldbuilding Writer on The Manehattan Project
Little Tinker - Sysadmin at Poniverse
Painted Heart

Special Thanks:
Orbiting Kettle - For some sorely-needed advice on getting something approaching a good synopsis for this tale!

This story is a sequel to How Not To Use Your Royal Prerogative

  In an Equestria where the Sonic Rainboom never happened, Sunset Shimmer is the prized pupil of the Princess of the Sun. As Sunset struggles to make up for her past misdeeds and come to terms with the pony she wants to be, Celestia sends her to find the classic work The Application of Unified Harmony Magic from the Royal Canterlot Archives.
  Right after lunch, some meddling by her friends and meeting somepony with firsthoof experience of the Sunset she used to be.

Featured on Equestria Daily on August 18, 2016!
Appeared in the FimFiction Featured Box!

Cast: Sunset Shimmer, Moon Dancer, Minuette, Twilight Sparkle & Princess Celestia

Stories set in the Wavelengths Timeline in chronological order:

Origins Arc
The Alchemy of Chemistry
Bards of the Badlands
Grading on a Bell Curve
Habits of the Equestrian Phoenix
How Not To Use Your Royal Prerogative

Applications Arc
The Application of Unified Harmony Magics
Princess Celestia: A Brief History
The Cloudsdale Report

Dreamers Arc
Tactics of Snowbound Unicorns
A Study in Chaos Theory
Teahouses of Saddle Arabia
As the Raven Flies

Cover Credits
Cover Design by Amber Spark
Sunset Shimmer Vector by TigerBeetle
Pony SciTwi Vector by Osipush
Canterlot Bookshelves Vector by FavoriteArtMan
Sunset Shimmer Cutie Mark by MillennialDan

Beta Reader Credits
Ebon Quill - Worldbuilding Writer on The Manehattan Project
Quantum State - Technical Director of The Manehattan Project
The Albinocorn - Master of Sunset Shimmer Stories

Strongly Recommended Stories:
The Brightest and the Best by Pineta - The events in this story are considered to be completely canon to this timeline and explain Twilight's entrance exam to Celestia's School for Gifted Unicorns. I cannot recommend this story enough.
MLP Annual 2013 - "The Fall of Sunset Shimmer" - As above, the 8-page short comic in the beginning of the Annual is also considered to be canon, though with some major variations.

Version 3.0 Edit: Extensive grammatical and mechanics changes. Adjustment to timeline of Sunset's second mirror experience.

Through countless centuries, Princess Celestia has remained a steadfast beacon of benevolence, kindness, wisdom and grace. Everypony knows the Princess of the Sun cannot have a dark side.

Sunset Shimmer is about to find out just how wrong they are, and in doing so, find that Celestia understands Sunset more than she ever thought possible.

Historian’s Note: Dreaming in Dawn's Light occurs several months after the events of A Royal Problem.

Featured on FimFiction for June 12-16, 2017!

Cast: Sunset Shimmer and Princess Celestia

Text and coloring design by Novel Idea
Princess Celestia, Sunset Shimmer and background by Jykinturah.
Sunset Shimmer Cutie Mark By Millennial Dan

Beta Reader & Editor Credits
Ebon Quill - Audio Director & Quest Designer on The Manehattan Project
Little Tinker - Master of Systems at Poniverse & Scripting Engineer on The Manehattan Project
Beltorn - Commenter-at-Large on FimFiction
Cursori: Reader of Many a Pony Word

Word Count: 8,000 words
Version: 2.3

Octavia has always played the piano. From a young age, it was her mother's dearest wish that she would learn, and she couldn't let herself disappoint her mother. So she played the piano. But that isn't to say she wanted to.

This is the story of her life, told by her. It's a story about music, family, and self-discovery.

Written for the /fic/ May Write-Off, in which it came second place (to DuncanR's amazing Erase and Rewind).

Edited by Vimbert.

The Gala is over, the first one since Luna's return from the moon. Tormented by guilt from having been Nightmare Moon, Luna walks into the garden to contemplate Discord's statue, and wonder if she made a horrible mistake all those centuries ago.

Celestia and Discord, as teens, flee their destroyed homeworld to a new world promised by a letter from Luna. But Discord can't escape his nature, nor Celestia her memories. Being a chaos mage on a starliner is a death sentence, and yet, Discord has to keep using his mind-control powers to take Celestia's emotions away, at her request, because otherwise she wants to die. And Gray Celestia, the discorded Celestia with no emotions but the drive to protect herself and Discord, will do anything that needs to be done to save them both.

Warnings: suicidal ideation, consensual mind control that's still kind of messed up, genocide, a near-execution, mass murder, and comforting lies.

Cover art is by ponkamena/polkahorse, who now goes by ashiida (link goes to their new deviantart account). The source link goes to the derpibooru version. This was the closest I could get from all of derpibooru, though in the fic they're both much younger than the art would suggest.

Five years of cheap thrills in the big city have left Sweetie Belle in bad debt with dangerous ponies. Forced to pay up, she returns to Ponyville to seek money from an estranged sister she loathes with a passion.

Featured on Equestria Daily October 6, 2015
Non-spoiler review by Paul Asaran