#Darkstar (SkC) is called Duskstar in Cloudstar's Journey so I didn't have to go out of my way to find a name. At least there's that

[brightblueflare]

BLAZING SKY AU TIMELINE

1850's - early 1900's - The Clans are formed, and the warrior code is created and expanded.

Summer, 1914 - Flystar's Reign starts.

Spring, 1919 - The destruction of SkyClan's forest begins.

Early Fall, 1919 - The Law of the Wild is added to the warrior code.

Late Fall, 1919 - Flystar dies, and Cloudstar succeeds him.

Early Winter, 1919 - SkyClan attempts to retake a patch of the forest that now belongs to ThunderClan. War breaks out, and the starving SkyClan cats, despite their persistence, are no match for well-fed, healthy ThunderClan warriors. In the future, this event is known as Cloudstar's Last Stand.

Mid Winter, 1919 - SkyClan has now lost most of their territory, and Cloudstar opts for the diplomatic route and asks the other leaders for help during the Gathering. However, none of them are willing to help. SkyClan leaves the forest. Only Birdflight, Cloudstar's mate, and their kittens Spottedkit and Gorsekit remain behind, taken in by ShadowClan. SkyClan swears to never look to the stars again.

Late Winter, early 1920 - Larkstripe (WC), Molepelt (ShC) and the other seers protest SkyClan's exile. Larkstripe, fully supported by Molepelt, goes on strike.

Early Spring, 1920 - Swiftstar's (WC) successor, Dalestar, separates Larkstripe from her kitten, Ripplekit, in an attempt to break the strike and discredit her for having a kitten, frowned upon but not yet forbidden by the law. This is the codification of the Seer's Vow. Birdflight nurses and raises Ripplekit in ShadowClan.

Mid Spring, 1920 - SkyClan reaches the gorge.

Fall, 1927 - Dawnstar passes, and her new deputy Ripplemoon becomes Ripplestar. On his first Gathering as leader, he stated that something had to be done about SkyClan. Either the Clans would give up their territory willingly or Ripplestar would make room. Start of Ripplestar's Riot.

Late Summer, 1928 - Gorseclaw betrays Ripplestar, and the Battle of the Full Moon takes place. Clanmates fight each other, littermates shed each other's blood, Gorseclaw kills Spottedpelt, and ultimately, StarClan themselves made the fifth oak, the symbol of SkyClan, fall on Ripplestar. The fall of the tree killed him, and put and end to his rebellion. Three laws are added to the warrior code, to ensure a riot like his never happens again. Gorseclaw joins ThunderClan.

Summer, 1932 - SkyClan disbands. Only a small number of cats remained in the gorge. A network was created to maintain the former Clan connected. This is called Spiderstar's Plan.

Spring, 1935 - Late Fall, 1940 - Redstar's and Cloudstar's descendants and their allies face each other in the ThunderClan Civil War for their Clan's leadership. The result is the death of many warriors, and Flarestar's, granddaughter of Redstar, victory.

Spring, 1942 - The cats of the gorge start receiving outside influence from towncats and travelers. The seer role is split in two.

Late Summer, 1942 - Formation of the Skybloods within ThunderClan.

Winter, 1950 - Amberheart, descendant of Cloudstar, is chosen as Flarestar's third deputy. Her descendants (Oakstar, Pinestar and Tigerstar) would rule ThunderClan for many seasons to come.

Summer, 1953 - Amberstar becomes the first Skyblood leader of ThunderClan.

Spring, 1963 - Froststar of ThunderClan takes Sunningrocks. Applestar of RiverClan fights her on it.

Winter, 1975 - Mapleshade's Vengeance takes place. Furious at Mapleshade's kittens exile, Darkstar of RiverClan suggests a new law: Queen's Rights, or the Kitten Protection Law.

"Mapleshade may have brought them to the river, but it was your foolishness, your short-sightedness and your cruelty that put them in that situation in the first place, Oakstar. No kitten should die for the crime of being born."

Early Spring, 1976 - Oakstar launches Crusades and attacks the towncats. Houndstar from ShadowClan joins in.

Winter, 1980 - BloodClan is formed in response to the Crusades. Towncats start fighting back against the Forest Clans.

Early Spring, 1981 - Houndstar falls back, and agrees to codify Darkstar's proposed law. Three kittens dead is, after all, a great loss.

Fall, 1982 - Heatherstar from WindClan ends tunneling and starts the WindClan-ShadowClan War.

Summer, 1984 - Pinestar's Choice begins.

Summer, 1986 - The Great Hunger in ThunderClan takes place.

Fall, 1989 - Yellowfang's Secret and Tallstar's Revenge begin.

Winter, 1991 - Pinestar becomes leader and ends the Crusades.

Spring, 1994 - Bluestar's Prophecy and Crookedstar's Promise begin.

Winter, 1996 - BloodClan's leader is killed, and Pinestar leaves both to find the peace of being a housecat and to aid BloodClan during their political crisis. Sunstar becomes leader of ThunderClan.

Spring, 1997 - Tallstar becomes leader of WindClan.

Summer, 2001 - Bluestar becomes ThunderClan's leader, and Crookedstar RiverClan's.

Fall, 2001 - Raggedstar dies, and Brokenstar becomes leader of ShadowClan.

Early Spring, 2003 - Into the Gorge begins.

And that's the timeline before the AU kicks in. Rusty/Firestar starting his journey on 2003 sounds about right.

CHANGES

Birdflight and her kittens take shelter in ShadowClan, not ThunderClan, after Molepelt, ShadowClan's seer, offers them a place in the Clan. Dawnstar is the least adamant that SkyClan leaves the forest, and considering Redstar's attitude and the previous battles (which in this AU is total war) with SkyClan, it seems unlikely for him to take Birdflight and her kittens in. Plus, ThunderClan can't be the "good guys" Clan like in canon, and MisunderstoodClan deserves good things from time to time.

The Law of the Wild (the "warriors reject the soft life of kittypets" rule) wasn't created because of Pinestar's defection, but because Flystar was tired of his warriors leaving the Clan to live comfortably while the rest of them starved.

The Seer's Vow is made maliciously. Dalestar (prev. Darkstar, CotC) argues that Larkstripe (prev. Larkwing) is breaking her vow by having a kitten. However, back then, while taboo, it wasn't forbidden by the law. This was made to discredit and hurt her, and to control the seers.

Ripplestar (CotC) isn't fighting for power, but to free territory for SkyClan to come back to. He's also Birdflight's adopted son.

The three laws that were added were the Leader's Rights (to not be questioned), the First Tasks (visiting the Moonstone as an apprentice at least once, and sitting vigil after obtaining a warrior name), which were tradition but not codified yet, and the Full Moon Truce (no fighting at Gatherings)

Time was added between Cloudstar's Journey (and Ripplestar's Riot) and Mapleshade's Vengeance. This was done simply to add more drama related to SkyClan's exile and the descendants that stayed in the forest.

The "a queen can choose not to name her kittens' father" rule that was forgotten after the first arc in canon is made into a consistent law. Done in response to Mapleshade's kittens being exiled because of their parentage, and hotly debated even decades after its creation. Watch out for those that argue against it.

Heatherstar starts a war with ShadowClan to conquer a part of their territory she was interested in, and ended tunneling (a harmless/defensive tradition) so her Clan could focus more on fighting on the offensive.

BloodClan is formed earlier, in response to the Clans' raids. They're also a neutral entity, not pure evil.

SkyClan hasn't been forgotten by the Forest Four, but their exile is treated as justified and deserved.