diff --git a/bot/src/guidance/cron.ts b/bot/src/guidance/cron.ts
index c7fb2e7..d218db3 100644
--- a/bot/src/guidance/cron.ts
+++ b/bot/src/guidance/cron.ts
@@ -50,7 +50,7 @@ import {
 import type { GuidanceSessionEnvelope } from "../kv/guidance-sessions.ts";
 import { strings } from "../i18n/strings.ts";
 
-/** The chat card's cadence (D-11/D-13): one card window every 3 minutes;
+/** The chat card's cadence (D-11/D-13): one card window every 4 minutes (the launch-gate retune: 2-minute ticks + CARD_CADENCE_S 240);
  *  the window's first tick is the due tick. */
 export const CARD_CADENCE_S = 240;