diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 687b3cd..6a7ecfd 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -117,5 +117,7 @@ jobs:
             bash tg_utils.sh msg "gh $RUN_NUM: workflow failed in $WDIFF"
         - name: end of workflow
           run: |
+            WORKFLOW_END=$(date +"%s")
+            WDIFF=$((WORKFLOW_END - WORKFLOW_START))
             bash tg_utils.sh msg "gh $RUN_NUM: workflow ended in $WDIFF"