diff --git a/topology/Brookhaven National Laboratory/BNL ATLAS Tier1/BNL-ATLAS_downtime.yaml b/topology/Brookhaven National Laboratory/BNL ATLAS Tier1/BNL-ATLAS_downtime.yaml
index b8ddecb4c..1bad7188a 100644
--- a/topology/Brookhaven National Laboratory/BNL ATLAS Tier1/BNL-ATLAS_downtime.yaml	
+++ b/topology/Brookhaven National Laboratory/BNL ATLAS Tier1/BNL-ATLAS_downtime.yaml	
@@ -1104,3 +1104,191 @@
   Services:
   - net.perfSONAR.Latency
 # ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603394
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_1
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603395
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_2
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603396
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_3
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603397
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_4
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603398
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_6
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603399
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_7
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603400
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_8
+  Services:
+  - CE
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603401
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_CVMFS_Squid
+  Services:
+  - Squid
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603402
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_Frontier_Squid
+  Services:
+  - Squid
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603403
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_SE
+  Services:
+  - SRMv2.disk
+  - SRMv2.tape
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603404
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_SE_AWS_East
+  Services:
+  - SRMv2
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603405
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_SE_AWS_West
+  Services:
+  - SRMv2
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603406
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_SE_AWS_West2
+  Services:
+  - SRMv2
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603407
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: BNL_ATLAS_SE_GRIDFTP
+  Services:
+  - WebDAV
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603408
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: lhcmon-bnl
+  Services:
+  - net.perfSONAR.Bandwidth
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603409
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: lhcperfmon-bnl
+  Services:
+  - net.perfSONAR.Latency
+# ---------------------------------------------------------
+- Class: SCHEDULED
+  ID: 1573603410
+  Description: HTCondor upgrade and dCache version upgrade
+  Severity: Outage
+  StartTime: Aug 29, 2023 13:00 +0000
+  EndTime: Aug 29, 2023 17:00 +0000
+  CreatedTime: Aug 18, 2023 12:05 +0000
+  ResourceName: ps-development
+  Services:
+  - net.perfSONAR.Latency
+# ---------------------------------------------------------