diff --git a/buildroot/bin/build_all_examples b/buildroot/bin/build_all_examples
index 595cfad839..d50937a732 100755
--- a/buildroot/bin/build_all_examples
+++ b/buildroot/bin/build_all_examples
@@ -184,7 +184,7 @@ find -ds "$CBASE"/config/examples -type d -name 'Configuration.h' -o -name 'Conf
   ((CEXPORT)) && CARGS+=("-e" "$CEXPORT")
 
   # Build many environments? Add -m argument
-  ((NOFAIL)) && CARGS+=("-m")
+  ((MANY)) && CARGS+=("-m")
 
   # Continue on fail? Add -f argument
   ((NOFAIL)) && CARGS+=("-f")
diff --git a/buildroot/bin/build_example b/buildroot/bin/build_example
index 623da8ac84..133f3c4cc9 100755
--- a/buildroot/bin/build_example
+++ b/buildroot/bin/build_example
@@ -211,22 +211,23 @@ while ((1)); do
   # "Index out of range" can fail without an error
   ((MANY)) && ((ERR == 66)) && ERR=0 && break  # "index out of range"
 
-  # Short message reporting Error or Success
-  ((ERR)) && alrt "Failed ($ERR)" || annc "Success"
-
   set -e
 
   if [[ $ERR -gt 0 ]]; then
 
+    alrt "Failed ($ERR)"
+
     # Error? For --nofail simply log. Otherwise return the error.
     if [[ -n $NOFAIL ]]; then
-      date +"%F %T [FAIL] $CONFIG" >>./.pio/error-log.txt
+      date +"%F %T [FAIL] $CONFIG ($BUILDINDEX)" >>./.pio/error-log.txt
     else
       exit $ERR
     fi
 
   else
 
+    annc "Success"
+
     # Copy exports back to the configs
     if [[ -n $EXPNUM ]]; then
       annc "Exporting $EXPNUM"
diff --git a/buildroot/share/PlatformIO/scripts/signature.py b/buildroot/share/PlatformIO/scripts/signature.py
index 6ae3793910..efb8527869 100755
--- a/buildroot/share/PlatformIO/scripts/signature.py
+++ b/buildroot/share/PlatformIO/scripts/signature.py
@@ -364,7 +364,7 @@ f'''#
         with config_h.open('w') as outfile:
             filegrp = { 'Configuration.h':'config:basic', 'Configuration_adv.h':'config:advanced' }
             vers = build_defines["CONFIGURATION_H_VERSION"]
-            dt_string = datetime.now().strftime("%Y-%m-%d at %H:%M:%S")
+            dt_string = datetime.utcnow().strftime("%Y-%m-%d at %H:%M:%S")
 
             out_text = f'''/**
  * Config.h - Marlin Firmware distilled configuration