diff --git a/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml b/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml
index 6c639eceb..0fd43ac2c 100644
--- a/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml	
+++ b/topology/University of Oklahoma/OU ATLAS/OU_OSCER_ATLAS_downtime.yaml	
@@ -702,7 +702,7 @@
   Description: SLURM and core network upgrades
   Severity: Outage
   StartTime: Oct 11, 2023 13:00 +0000
-  EndTime: Oct 12, 2023 04:00 +0000
+  EndTime: Oct 11, 2023 23:00 +0000
   CreatedTime: Oct 07, 2023 08:34 +0000
   ResourceName: OU_OSCER_ATLAS
   Services:
@@ -714,7 +714,7 @@
   Description: SLURM and core network upgrades
   Severity: Outage
   StartTime: Oct 11, 2023 13:00 +0000
-  EndTime: Oct 12, 2023 04:00 +0000
+  EndTime: Oct 11, 2023 23:00 +0000
   CreatedTime: Oct 07, 2023 08:34 +0000
   ResourceName: OU_OSCER_ATLAS_SE
   Services: