--- a/fop-core/src/main/java/org/apache/fop/pdf/FileIDGenerator.java
+++ b/fop-core/src/main/java/org/apache/fop/pdf/FileIDGenerator.java
@@ -86,7 +86,9 @@ abstract class FileIDGenerator {
 
         private void generateFileID() {
             DateFormat df = new SimpleDateFormat("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'SSS");
-            digest.update(PDFDocument.encode(df.format(new Date())));
+            String sde = System.getenv("SOURCE_DATE_EPOCH");
+            Date d = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
+            digest.update(PDFDocument.encode(df.format(d)));
             // Ignoring the filename here for simplicity even though it's recommended
             // by the PDF spec
             digest.update(PDFDocument.encode(String.valueOf(document.getCurrentFileSize())));
--- a/fop-core/src/main/java/org/apache/fop/pdf/PDFEmbeddedFile.java
+++ b/fop-core/src/main/java/org/apache/fop/pdf/PDFEmbeddedFile.java
@@ -35,8 +35,10 @@ public class PDFEmbeddedFile extends PDFStream {
         put("Type", new PDFName("EmbeddedFile"));
         put("Subtype", new PDFName("application/octet-stream"));
         PDFDictionary params = new PDFDictionary();
-        params.put("CreationDate", PDFInfo.formatDateTime(new Date()));
-        params.put("ModDate", PDFInfo.formatDateTime(new Date()));
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        Date d = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
+        params.put("CreationDate", PDFInfo.formatDateTime(d));
+        params.put("ModDate", PDFInfo.formatDateTime(d));
         put("Params", params);
     }
 
--- a/fop-core/src/main/java/org/apache/fop/pdf/PDFInfo.java
+++ b/fop-core/src/main/java/org/apache/fop/pdf/PDFInfo.java
@@ -251,7 +251,8 @@ public class PDFInfo extends PDFObject {
 
             // creation date in form (D:YYYYMMDDHHmmSSOHH'mm')
             if (creationDate == null) {
-                creationDate = new Date();
+                String sde = System.getenv("SOURCE_DATE_EPOCH");
+                creationDate = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
             }
             bout.write(encode("/CreationDate "));
             bout.write(encodeString(formatDateTime(creationDate)));
--- a/fop-core/src/main/java/org/apache/fop/pdf/PDFMetadata.java
+++ b/fop-core/src/main/java/org/apache/fop/pdf/PDFMetadata.java
@@ -135,7 +135,8 @@ public class PDFMetadata extends PDFStream {
 
         //Set creation date if not available, yet
         if (info.getCreationDate() == null) {
-            Date d = new Date();
+            String sde = System.getenv("SOURCE_DATE_EPOCH");
+            Date d = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
             info.setCreationDate(d);
         }
 
--- a/fop-core/src/main/java/org/apache/fop/pdf/PDFSignature.java
+++ b/fop-core/src/main/java/org/apache/fop/pdf/PDFSignature.java
@@ -106,7 +106,9 @@ public class PDFSignature {
             if (signParams.getReason() != null) {
                 put("Reason", signParams.getReason());
             }
-            put("M", PDFInfo.formatDateTime(new Date()));
+            String sde = System.getenv("SOURCE_DATE_EPOCH");
+            Date d = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
+            put("M", PDFInfo.formatDateTime(d));
             PDFArray array = new PDFArray();
             array.add(new SigRef());
             put("Reference", array);
--- a/fop-core/src/main/java/org/apache/fop/render/intermediate/IFRenderer.java
+++ b/fop-core/src/main/java/org/apache/fop/render/intermediate/IFRenderer.java
@@ -544,7 +544,9 @@ public class IFRenderer extends AbstractPathOrientedRenderer {
         } else {
             xmpBasic.setCreatorTool(Version.getVersion());
         }
-        xmpBasic.setMetadataDate(new java.util.Date());
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        java.util.Date d = (sde == null) ? new java.util.Date() : new java.util.Date(1000 * Long.parseLong(sde));
+        xmpBasic.setMetadataDate(d);
         if (getUserAgent().getCreationDate() != null) {
             xmpBasic.setCreateDate(getUserAgent().getCreationDate());
         } else {
--- a/fop-core/src/main/java/org/apache/fop/render/pdf/PDFRenderingUtil.java
+++ b/fop-core/src/main/java/org/apache/fop/render/pdf/PDFRenderingUtil.java
@@ -262,7 +262,9 @@ class PDFRenderingUtil {
         fopXMP.mergeInto(docXMP, exclude);
         XMPBasicAdapter xmpBasic = XMPBasicSchema.getAdapter(docXMP);
         //Metadata was changed so update metadata date
-        xmpBasic.setMetadataDate(new java.util.Date());
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        java.util.Date d = (sde == null) ? new java.util.Date() : new java.util.Date(1000 * Long.parseLong(sde));
+        xmpBasic.setMetadataDate(d);
         PDFMetadata.updateInfoFromMetadata(docXMP, pdfDoc.getInfo());
 
         PDFMetadata pdfMetadata = pdfDoc.getFactory().makeMetadata(
@@ -481,7 +483,9 @@ class PDFRenderingUtil {
                 augmentDictionary((PDFDictionary)currentPage.get("DPart"), extension);
             }
         } else if (type == PDFDictionaryType.PagePiece) {
-            String date = DateFormatUtil.formatPDFDate(new Date(), TimeZone.getDefault());
+            String sde = System.getenv("SOURCE_DATE_EPOCH");
+            Date dd = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
+            String date = DateFormatUtil.formatPDFDate(dd, TimeZone.getDefault());
             if (currentPage.get("PieceInfo") == null) {
                 currentPage.put("PieceInfo", new PDFDictionary());
                 currentPage.put("LastModified", date);
--- a/fop-core/src/main/java/org/apache/fop/render/ps/PSDocumentHandler.java
+++ b/fop-core/src/main/java/org/apache/fop/render/ps/PSDocumentHandler.java
@@ -211,7 +211,9 @@ public class PSDocumentHandler extends AbstractBinaryWritingIFDocumentHandler {
         //PostScript Header
         gen.writeln(DSCConstants.PS_ADOBE_30);
         gen.writeDSCComment(DSCConstants.CREATOR, new String[] {getUserAgent().getProducer()});
-        gen.writeDSCComment(DSCConstants.CREATION_DATE, new Object[] {new java.util.Date()});
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        java.util.Date d = (sde == null) ? new java.util.Date() : new java.util.Date(1000 * Long.parseLong(sde));
+        gen.writeDSCComment(DSCConstants.CREATION_DATE, new Object[] {d});
         gen.writeDSCComment(DSCConstants.LANGUAGE_LEVEL, gen.getPSLevel());
         gen.writeDSCComment(DSCConstants.PAGES, new Object[] {DSCConstants.ATEND});
         gen.writeDSCComment(DSCConstants.BBOX, DSCConstants.ATEND);
--- a/fop-core/src/main/java/org/apache/fop/tools/anttasks/FileCompare.java
+++ b/fop-core/src/main/java/org/apache/fop/tools/anttasks/FileCompare.java
@@ -149,8 +149,10 @@ public class FileCompare {
     }
 
     private void writeHeader(PrintWriter results) {
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        Date d = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
         String dateTime = DateFormat.getDateTimeInstance(DateFormat.MEDIUM,
-                DateFormat.MEDIUM).format(new Date());
+                DateFormat.MEDIUM).format(d);
         results.println("<html><head><title>Test Results</title></head><body>\n");
         results.println("<h2>Compare Results<br>");
         results.println("<font size='1'>created " + dateTime
--- a/fop-core/src/test/java/org/apache/fop/render/rtf/rtflib/testdocs/TestDocument.java
+++ b/fop-core/src/test/java/org/apache/fop/render/rtf/rtflib/testdocs/TestDocument.java
@@ -82,7 +82,8 @@ abstract class TestDocument {
         para.newLineBreak();
         para.newText("generated by class " + getClass().getName());
         para.newLineBreak();
-        para.newText("generated on " + new Date());
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        para.newText("generated on " + (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde)));
         para.close();
    }
 }
--- a/fop/examples/plan/src/org/apache/fop/plan/SimplePlanDrawer.java
+++ b/fop/examples/plan/src/org/apache/fop/plan/SimplePlanDrawer.java
@@ -129,7 +129,8 @@ public class SimplePlanDrawer implements PlanDrawer {
     }
 
     protected void addPlan(Document doc, Element svgRoot, EventList data) {
-        Date currentDate = new Date();
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        Date currentDate = (sde == null) ? new Date() : new Date(1000 * Long.parseLong(sde));
 
         Date lastWeek = startDate;
         Date future = endDate;