diff --git a/conductor/tracks/timezone_rrule_20260218/plan.md b/conductor/tracks/timezone_rrule_20260218/plan.md
index 34cf397..9f80467 100644
--- a/conductor/tracks/timezone_rrule_20260218/plan.md
+++ b/conductor/tracks/timezone_rrule_20260218/plan.md
@@ -9,11 +9,11 @@
     - [x] Implement `getUtcOffsetMs` in `timezones.ts`
 - [x] Task: Conductor - User Manual Verification 'Phase 1: Foundation' (Protocol in workflow.md)
 
-## Phase 2: Core Logic - Extraction & Shifting
-- [ ] Task: Fix Wall-Clock Extraction logic
-    - [ ] Write failing tests for `resolveEventStart` (mocking `Intl` if necessary)
-    - [ ] Implement `resolveEventStart` in `icalendar.ts` to handle local time ground truth
-- [ ] Task: Conductor - User Manual Verification 'Phase 2: Core Logic' (Protocol in workflow.md)
+## Phase 2: Core Logic - Extraction & Shifting [checkpoint: 10a6db5]
+- [x] Task: Fix Wall-Clock Extraction logic
+    - [x] Write failing tests for `resolveEventStart` (mocking `Intl` if necessary)
+    - [x] Implement `resolveEventStart` in `icalendar.ts` to handle local time ground truth
+- [x] Task: Conductor - User Manual Verification 'Phase 2: Core Logic' (Protocol in workflow.md)
 
 ## Phase 3: Features - Recurring Events & Filtering
 - [ ] Task: Integrate `rrule` library