diff --git a/scripts/run-bhyve-test.sh b/scripts/run-bhyve-test.sh
index df4338d0..4ee35c24 100755
--- a/scripts/run-bhyve-test.sh
+++ b/scripts/run-bhyve-test.sh
@@ -14,15 +14,18 @@
 
 LOG_DIR="${PWD}/logs"
 mkdir -p "$LOG_DIR"
+# Log filename uses sortable ISO 8601 basic (machine artifact name, per the
+# AGENTS.md date rule's internal-storage exemption). User-facing timestamps
+# below use European display format (DD.mmm.YYYY HH:MM:SS).
 LOG_FILE="${LOG_DIR}/bhyve-test-$(date +%Y%m%d-%H%M%S).log"
-echo "Test started: $(date)" > "$LOG_FILE"
+echo "Test started: $(date '+%d.%b.%Y %H:%M:%S')" > "$LOG_FILE"
 echo "Log: $LOG_FILE" >&2
 echo "" >> "$LOG_FILE"
 
 # Run the actual test script, capturing both stdout and stderr
 echo "=== BHYVE TEST START ===" >> "$LOG_FILE"
 echo "Command: $(pwd)/scripts/bhyve-test.sh $*" >> "$LOG_FILE"
-echo "Started: $(date '+%Y-%m-%d %H:%M:%S')" >> "$LOG_FILE"
+echo "Started: $(date '+%d.%b.%Y %H:%M:%S')" >> "$LOG_FILE"
 echo "" >> "$LOG_FILE"
 
 # Run with tee to show output AND log it. Pass through any args (ISO path, --name).
@@ -31,7 +34,7 @@ EXIT_CODE=$?
 
 echo "" >> "$LOG_FILE"
 echo "=== BHYVE TEST END ===" >> "$LOG_FILE"
-echo "Ended: $(date '+%Y-%m-%d %H:%M:%S')" >> "$LOG_FILE"
+echo "Ended: $(date '+%d.%b.%Y %H:%M:%S')" >> "$LOG_FILE"
 echo "Exit code: $EXIT_CODE" >> "$LOG_FILE"
 echo "" >> "$LOG_FILE"