--- openjdk/langtools/src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlDocWriter.java	2024-10-07 14:14:13.353789871 +0200
+++ openjdk/langtools/src/share/classes/com/sun/tools/doclets/formats/html/markup/HtmlDocWriter.java	2024-10-07 14:27:56.233184616 +0200
@@ -328,7 +328,7 @@
 
     protected Comment getGeneratedBy(boolean timestamp) {
         String text = "Generated by javadoc"; // marker string, deliberately not localized
-        if (timestamp) {
+        if (timestamp && System.getenv("SOURCE_DATE_EPOCH") == null) {
             Calendar calendar = new GregorianCalendar(TimeZone.getDefault());
             Date today = calendar.getTime();
             text += " ("+ configuration.getDocletSpecificBuildDate() + ") on " + today;