diff --git a/docs/analysis/cryptanalysis/report-mixer-3.md b/docs/analysis/cryptanalysis/report-mixer-3.md
index e0b7def0c..3ed0fb67a 100644
--- a/docs/analysis/cryptanalysis/report-mixer-3.md
+++ b/docs/analysis/cryptanalysis/report-mixer-3.md
@@ -1,7 +1,7 @@
 # Report: the statistical distinguisher and the round margin of M_r
 
 Internal adversarial pass, not an independent review. Every sentence here that could be quoted in public carries
-that label. Lane adv-mixer-3, branch adv-mixer-3. First results 7 October 2026, 20:0x BST; rows are appended as
+that label. Lane adv-mixer-3, branch adv-mixer-3. First results 7 October 2026, 19:0x UTC; rows are appended as
 they land.
 
 ## Header
@@ -117,7 +117,7 @@ rows (k = 1..4, both days, one-hour cap) land below.
 
 ## Box-hours
 
-Rule changes during the pass (so the hours stay honest): 19:4x BST the build-server lane dropped the SIGSTOP
+Rule changes during the pass (so the hours stay honest): 18:4x UTC the build-server lane dropped the SIGSTOP
 yield-to-builds rule and set every sweep to nice 10 on cores 8 to 95; the same lane moved every log, pid file and
 CNF out of the worktree mirror into /srv/builds/_adv-mixer-3/. Both applied before the first sweep started.
 
diff --git a/docs/plans/cryptanalysis/plan-mixer-3.md b/docs/plans/cryptanalysis/plan-mixer-3.md
index 59fd5a6d6..9676fd4fb 100644
--- a/docs/plans/cryptanalysis/plan-mixer-3.md
+++ b/docs/plans/cryptanalysis/plan-mixer-3.md
@@ -1,7 +1,7 @@
 # Attack plan: the statistical distinguisher and the round margin of M_r
 
 Internal adversarial pass, not an independent review. Lane adv-mixer-3, branch adv-mixer-3 from build/master
-(7a7caa34). Written 7 October 2026, 19:20 to 20:20 BST. Every sentence here that could be quoted in public
+(7a7caa34). Written 7 October 2026, 18:20 to 19:20 UTC. Every sentence here that could be quoted in public
 carries the label: internal adversarial pass, not an independent review.
 
 ## 0. The outsider rule, applied
@@ -9,7 +9,7 @@ carries the label: internal adversarial pass, not an independent review.
 | Check | Result |
 |---|---|
 | Frozen commit | 017e70376489251e18564c0abce7e466e606c8b3 (class v4 sub-version 3, object byte 7) |
-| Base commit | build/master 7a7caa34 (fetched 19:25 BST, the current mirror; the earlier master 3f0afcd5 differed from the frozen crate in 6 files and was never used here) |
+| Base commit | build/master 7a7caa34 (fetched 18:25 UTC, the current mirror; the earlier master 3f0afcd5 differed from the frozen crate in 6 files and was never used here) |
 | `git diff --quiet 017e7037 HEAD -- igneum-pow && echo IDENTICAL` | prints IDENTICAL. The crate is byte-identical to the frozen commit. The harness depends on the worktree's igneum-pow by path |
 | Attacker | an outsider with the public kit. I have never worked on the hash code. No defender number is read; every figure below is derived from the crate, the spec or the chip model, or marked unknown |
 | Worktree | /Users/joshm/Projects/igneum-wt-adv-mixer-3, harness under tools/attack/adv-mixer-3/ |
@@ -186,7 +186,7 @@ The report carries the hours actually spent. Every sweep is a queue file on buil
 Not opened: anything else under docs/, site/, proto-metal/, git log, commit messages, any other branch or
 worktree. The memhard.rs comments point at docs/plans/mixer-x4.md, hot-table.md, era-layout.md and
 counter-asic-3-derivation.md; not followed. The spec points at MEMHARD.md and several analyses; not followed.
-build/adv-mixer-2 was not on the build mirror at 19:25 BST.
+build/adv-mixer-2 was not on the build mirror at 18:25 UTC.
 
 ## 6. How this lane differs from adv-mixer