diff --git a/.github/workflows/security-weekly-rebuild.yml b/.github/workflows/security-weekly-rebuild.yml
index 62e76a6c..db2916f5 100644
--- a/.github/workflows/security-weekly-rebuild.yml
+++ b/.github/workflows/security-weekly-rebuild.yml
@@ -6,7 +6,7 @@ name: Weekly Security Rebuild
 
 on:
   schedule:
-    - cron: '0 2 * * 0' # Sundays at 02:00 UTC
+    - cron: '0 12 * * 2' # Tuesdays at 12:00 UTC
   workflow_dispatch:
     inputs:
       force_rebuild:
diff --git a/.github/workflows/weekly-nightly-promotion.yml b/.github/workflows/weekly-nightly-promotion.yml
index d0f57ae4..47ad9fd6 100644
--- a/.github/workflows/weekly-nightly-promotion.yml
+++ b/.github/workflows/weekly-nightly-promotion.yml
@@ -5,9 +5,9 @@ name: Weekly Nightly to Main Promotion
 
 on:
   schedule:
-    # Every Monday at 10:30 UTC (5:30am EST / 6:30am EDT)
+    # Every Monday at 12:00 UTC (7:00am EST / 8:00am EDT)
     # Offset from nightly sync (09:00 UTC) to avoid schedule race and allow validation completion.
-    - cron: '30 10 * * 1'
+    - cron: '0 12 * * 1'
   workflow_dispatch:
     inputs:
       reason: