Honkai Star Rail 4.6 Endgame Schedule: Memory of Chaos, Apocalyptic Shadow and Pure Fiction

El Honkai Star Rail endgame schedule for 4.6 has four dated windows: Memory of Chaos “Crossing the Afterlife” until 2 November 2026, Apocalyptic Shadow from 5 October, Pure Fiction from 19 October, and a second Memory of Chaos from 2 November. This guide is current as of 30 September 2026 and follows HoYoverse’s official Version 4.6 “Dance With the Beast Before Moonrise” post, which runs from the 28 September update, a maintenance of about five hours that began at 06:00 (UTC+8), to 11 November 2026 06:00 (UTC+8); the first Memory of Chaos opens once that maintenance ends. It covers the dates, what each period changes, Anomaly Arbitration, and the Currency Wars update.

The permanent modes “Forgotten Hall: Memory of Chaos”, “Apocalyptic Shadow” and “Pure Fiction” are refreshed alternately, according to HoYoverse’s Version 4.6 update details. Version 4.6 is the exception to that pattern: it features two consecutive phases of Memory of Chaos.

Anomaly Arbitration is a separate high-difficulty mode, not part of that alternating rotation. Per the official post, it is updated with 4.6 under the theme “Anomaly Arbitration: Return to Roots”, and playing it earns rewards including Lone Stardust, Interference Keys, Self-Modeling Resin and limited-time avatar frames.

All times below are the post’s “server time” figures as of 30 September 2026.

From 19 October to 2 November (server time), Crossing the Afterlife, Apocalyptic Shadow and Pure Fiction are all open. From 2 to 16 November it is Survival of the Fittest, Apocalyptic Shadow and Pure Fiction. That is our arithmetic from the dates, 14 days each time. Apocalyptic Shadow, Pure Fiction and the second Memory of Chaos also run past the end of Version 4.6 on 11 November 06:00 (UTC+8).

Every buff below comes from the official post. The two Memory of Chaos periods and Apocalyptic Shadow include Elation-related effects, while Pure Fiction instead grants additional Grit Value when allies inflict debuffs.

Memory of Chaos: Crossing the Afterlife

The character in position 1 of the ally lineup gains the Elation Skill “Euphoric Maelstrom”, dealing 100% Elation DMG of the character’s Type to all enemies. When each Cycle begins, Aha immediately gains 1 extra turn with a fixed 20 Punchlines taken into account, and that turn does not consume Punchlines.

Apocalyptic Shadow: Dominance of Oblivion

When an enemy with “Steadfast Safeguard” is Weakness Broken, all allies are dispelled of control debuffs, their actions are advanced, and Aha immediately gains an extra turn taking a fixed 10 Punchlines into account. The period also raises Ultimate DMG taken by all enemies by 25% and raises Elation DMG by 15%.

Pure Fiction: Imagined Words

When an ally inflicts a debuff on an enemy, allies additionally accumulate 1 Grit Value. This can trigger up to 10 times per enemy target.

Memory of Chaos: Survival of the Fittest

Allies who use their Ultimate gain 5 Punchlines. The same Aha extra turn each Cycle, with a fixed 20 Punchlines counted, is repeated from the first phase.

• Currency Wars: a Double Ascension Points mode is live with 4.6, and Voracity-related enemy affixes are added. The details sit in HoYoverse’s notice “Currency Wars: Zero-Sum Game Update Details V4.6”.
• Wishpower UP! Down with Voracity!: defeating Voracity-corroded enemies, including in Divergent Universe’s Cyclical Extrapolation and in Currency Wars, gathers Wishpower for Trendible Voucher ×18, Stellar Jade ×500 and a commemorative medal until 11 November 06:00 (UTC+8). It needs the Adventure Mission “Calyx (Golden): Bud of Memories”.
• Rewards: the post states no star or Stellar Jade totals per stage for the three permanent modes; only Anomaly Arbitration has named reward types.
• Not endgame rewards: the Stellar Jade ×300 maintenance compensation and the separate ×300 bug compensation go to Trailblazers at Trailblaze Level 4 or above before 28 September 2026 06:00 (UTC+8).

Sources and Confidence

This table separates what the studio has confirmed and what is not confirmed yet. Each claim below is tied to the post and the game version it describes.