diff --git a/topology/University of Chicago/MWT2 ATLAS UC/MWT2_downtime.yaml b/topology/University of Chicago/MWT2 ATLAS UC/MWT2_downtime.yaml
index 7102f192a..d63ed01a1 100644
--- a/topology/University of Chicago/MWT2 ATLAS UC/MWT2_downtime.yaml	
+++ b/topology/University of Chicago/MWT2 ATLAS UC/MWT2_downtime.yaml	
@@ -1292,8 +1292,8 @@
   ID: 996659482
   Description: ICC Quarterly PM
   Severity: Outage
-  StartTime: Oct 19, 2021 13:00 +0000
-  EndTime: Oct 20, 2021 01:00 +0000
+  StartTime: Oct 20, 2021 13:00 +0000
+  EndTime: Oct 21, 2021 01:00 +0000
   CreatedTime: Oct 19, 2021 17:52 +0000
   ResourceName: MWT2_CE_UIUC
   Services: