diff --git a/episodes/2026-02-20.md b/episodes/2026-02-20.md
index 2c4ff9ca13d..9713dd921bd 100644
--- a/episodes/2026-02-20.md
+++ b/episodes/2026-02-20.md
@@ -35,3 +35,7 @@
 ## 00:47 - Fix: Race condition in cognitive-memory _save_state loses last_reflection timestamp when daily+weekly timers collide
 - **Type:** fix
 - **Tags:** cognitive-memory, fix, race-condition, systemd, state-management, atomicity
+
+## 00:47 - Systemd OnCalendar=weekly and OnCalendar=daily fire simultaneously on Sundays/Mondays - always stagger shared-state timers
+- **Type:** insight
+- **Tags:** systemd, timer, gotcha, race-condition, cognitive-memory, scheduling