--- a/src/java/org/apache/ivy/ant/AntWorkspaceResolver.java
+++ b/src/java/org/apache/ivy/ant/AntWorkspaceResolver.java
@@ -197,7 +197,7 @@ public class AntWorkspaceResolver extend
                     throw new RuntimeException("Unsupported file path : " + artifactFile, e);
                 }
 
-                res.add(new DefaultArtifact(md.getModuleRevisionId(), new Date(), name, type, ext,
+                res.add(new DefaultArtifact(md.getModuleRevisionId(), System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date(), name, type, ext,
                         url, null));
             }
 
--- a/src/java/org/apache/ivy/ant/IvyDeliver.java
+++ b/src/java/org/apache/ivy/ant/IvyDeliver.java
@@ -374,7 +374,7 @@ public class IvyDeliver extends IvyTask
         if (revision == null) {
             revision = Ivy.getWorkingRevision();
         }
-        Date pubdate = getPubDate(this.pubdate, new Date());
+        Date pubdate = getPubDate(this.pubdate, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date());
         if (pubRevision == null) {
             if (revision.startsWith("working@")) {
                 pubRevision = DateUtil.format(pubdate);
--- a/src/java/org/apache/ivy/ant/IvyPublish.java
+++ b/src/java/org/apache/ivy/ant/IvyPublish.java
@@ -273,7 +273,7 @@ public class IvyPublish extends IvyTask
         if ("working".equals(revision)) {
             revision = Ivy.getWorkingRevision();
         }
-        Date pubdate = getPubDate(this.pubdate, new Date());
+        Date pubdate = getPubDate(this.pubdate, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date());
         if (pubRevision == null) {
             if (revision.startsWith("working@")) {
                 pubRevision = DateUtil.format(pubdate);
--- a/src/java/org/apache/ivy/ant/IvyTask.java
+++ b/src/java/org/apache/ivy/ant/IvyTask.java
@@ -177,7 +177,7 @@ public abstract class IvyTask extends Ta
             return def;
         }
         if ("now".equals(date.toLowerCase(Locale.US))) {
-            return new Date();
+            return System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date();
         }
         try {
             return DateUtil.parse(date);
--- a/src/java/org/apache/ivy/core/cache/DefaultRepositoryCacheManager.java
+++ b/src/java/org/apache/ivy/core/cache/DefaultRepositoryCacheManager.java
@@ -1472,7 +1472,7 @@ public class DefaultRepositoryCacheManag
     }
 
     private Artifact getDefaultMetadataArtifact(ModuleRevisionId mrid) {
-        return new DefaultArtifact(mrid, new Date(), "metadata", "metadata", "ivy", true);
+        return new DefaultArtifact(mrid, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date(), "metadata", "metadata", "ivy", true);
     }
 
     // not used any more, but may be useful for finer grained locking when downloading artifacts
--- a/src/java/org/apache/ivy/core/deliver/DeliverOptions.java
+++ b/src/java/org/apache/ivy/core/deliver/DeliverOptions.java
@@ -61,7 +61,7 @@ public class DeliverOptions {
      * @return a DeliverOptions instance ready to be used or customized
      */
     public static DeliverOptions newInstance(IvySettings settings) {
-        return new DeliverOptions(null, new Date(), new DefaultPublishingDRResolver(),
+        return new DeliverOptions(null, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date(), new DefaultPublishingDRResolver(),
                 settings.doValidate(), true, null);
     }
 
--- a/src/java/org/apache/ivy/core/install/InstallEngine.java
+++ b/src/java/org/apache/ivy/core/install/InstallEngine.java
@@ -86,7 +86,7 @@ public class InstallEngine {
 
             DefaultModuleDescriptor md = new DefaultModuleDescriptor(ModuleRevisionId.newInstance(
                 "apache", "ivy-install", "1.0"), settings.getStatusManager().getDefaultStatus(),
-                    new Date());
+                    System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date());
             String resolveId = ResolveOptions.getDefaultResolveId(md);
             md.addConfiguration(new Configuration("default"));
             md.addConflictManager(new ModuleId(ExactPatternMatcher.ANY_EXPRESSION,
--- a/src/java/org/apache/ivy/core/module/descriptor/DefaultArtifact.java
+++ b/src/java/org/apache/ivy/core/module/descriptor/DefaultArtifact.java
@@ -100,7 +100,7 @@ public class DefaultArtifact extends Abs
             throw new NullPointerException("null arid not allowed");
         }
         if (publicationDate == null) {
-            publicationDate = new Date();
+            publicationDate = System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date();
         }
         this.publicationDate = publicationDate;
         this.arid = arid;
--- a/src/java/org/apache/ivy/core/module/descriptor/DefaultModuleDescriptor.java
+++ b/src/java/org/apache/ivy/core/module/descriptor/DefaultModuleDescriptor.java
@@ -272,7 +272,7 @@ public class DefaultModuleDescriptor imp
         this.resolvedRevId = id;
         this.status = status;
         this.publicationDate = pubDate;
-        this.resolvedPublicationDate = publicationDate == null ? new Date() : publicationDate;
+        this.resolvedPublicationDate = publicationDate == null ? (System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date()) : publicationDate;
         this.isDefault = isDefault;
         this.parser = XmlModuleDescriptorParser.getInstance();
     }
@@ -308,7 +308,7 @@ public class DefaultModuleDescriptor imp
     public void setPublicationDate(Date publicationDate) {
         this.publicationDate = publicationDate;
         if (resolvedPublicationDate == null) {
-            resolvedPublicationDate = publicationDate == null ? new Date() : publicationDate;
+            resolvedPublicationDate = publicationDate == null ? (System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date()) : publicationDate;
         }
     }
 
--- a/src/java/org/apache/ivy/core/publish/PublishEngine.java
+++ b/src/java/org/apache/ivy/core/publish/PublishEngine.java
@@ -102,7 +102,7 @@ public class PublishEngine {
         ModuleDescriptor md = null;
         if (options.getSrcIvyPattern() != null) {
             File ivyFile = settings.resolveFile(IvyPatternHelper.substitute(
-                options.getSrcIvyPattern(), DefaultArtifact.newIvyArtifact(pubmrid, new Date())));
+                options.getSrcIvyPattern(), DefaultArtifact.newIvyArtifact(pubmrid, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date())));
             if (!ivyFile.exists()) {
                 throw new IllegalArgumentException("ivy file to publish not found for " + mrid
                         + ": call deliver before (" + ivyFile + ")");
@@ -132,7 +132,7 @@ public class PublishEngine {
                                             : options.getStatus())
                                     .setRevision(options.getPubrevision())
                                     .setBranch(options.getPubBranch())
-                                    .setPubdate(options.getPubdate() == null ? new Date()
+                                    .setPubdate(options.getPubdate() == null ? (System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date())
                                             : options.getPubdate())
                                     .setMerge(options.isMerge())
                                     .setMergedDescriptor(md)
--- a/src/java/org/apache/ivy/core/report/ResolveReport.java
+++ b/src/java/org/apache/ivy/core/report/ResolveReport.java
@@ -360,7 +360,7 @@ public class ResolveReport {
 
     public ModuleDescriptor toFixedModuleDescriptor(IvySettings settings, List<ModuleId> midToKeep) {
         DefaultModuleDescriptor fixedmd = new DefaultModuleDescriptor(md.getModuleRevisionId(),
-                md.getStatus(), new Date());
+                md.getStatus(), System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date());
 
         // copy namespaces
         for (Map.Entry<String, String> ns : md.getExtraAttributesNamespaces().entrySet()) {
--- a/src/java/org/apache/ivy/core/resolve/ResolveEngine.java
+++ b/src/java/org/apache/ivy/core/resolve/ResolveEngine.java
@@ -572,7 +572,7 @@ public class ResolveEngine {
         try {
             options.setConfs(confs);
 
-            Date reportDate = new Date();
+            Date reportDate = System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date();
             ResolveData data = context.getResolveData();
             if (data == null) {
                 data = new ResolveData(this, options);
--- a/src/java/org/apache/ivy/osgi/core/BundleInfoAdapter.java
+++ b/src/java/org/apache/ivy/osgi/core/BundleInfoAdapter.java
@@ -93,7 +93,7 @@ public class BundleInfoAdapter {
         md.addExtraAttributeNamespace("o", Ivy.getIvyHomeURL() + "osgi");
         ModuleRevisionId mrid = asMrid(BundleInfo.BUNDLE_TYPE, bundle.getSymbolicName(),
             bundle.getVersion());
-        md.setResolvedPublicationDate(new Date());
+        md.setResolvedPublicationDate(System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date());
         md.setModuleRevisionId(mrid);
 
         md.addConfiguration(CONF_DEFAULT);
--- a/src/java/org/apache/ivy/osgi/repo/AbstractOSGiResolver.java
+++ b/src/java/org/apache/ivy/osgi/repo/AbstractOSGiResolver.java
@@ -201,7 +201,7 @@ public abstract class AbstractOSGiResolv
             Collections.singletonMap(CAPABILITY_EXTRA_ATTR, md.getModuleRevisionId().toString()));
 
         DefaultModuleDescriptor capabilityMd = new DefaultModuleDescriptor(capabilityRev,
-                getSettings().getStatusManager().getDefaultStatus(), new Date());
+                getSettings().getStatusManager().getDefaultStatus(), System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date());
 
         String useConf = BundleInfoAdapter.CONF_USE_PREFIX + dd.getDependencyRevisionId().getName();
 
--- a/src/java/org/apache/ivy/plugins/parser/m2/PomModuleDescriptorBuilder.java
+++ b/src/java/org/apache/ivy/plugins/parser/m2/PomModuleDescriptorBuilder.java
@@ -249,7 +249,7 @@ public class PomModuleDescriptorBuilder
             DependencyResolver resolver = parserSettings.getResolver(mrid);
 
             if (resolver != null) {
-                DefaultArtifact artifact = new DefaultArtifact(mrid, new Date(), artifactId, "jar",
+                DefaultArtifact artifact = new DefaultArtifact(mrid, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date(), artifactId, "jar",
                         "jar");
                 ArtifactOrigin artifactOrigin = resolver.locate(artifact);
 
@@ -268,7 +268,7 @@ public class PomModuleDescriptorBuilder
             ext = packaging;
         }
 
-        mainArtifact = new DefaultArtifact(mrid, new Date(), artifactId, packaging, ext);
+        mainArtifact = new DefaultArtifact(mrid, System.getenv("SOURCE_DATE_EPOCH") != null ? new Date(1000 * Long.parseLong(System.getenv("SOURCE_DATE_EPOCH"))) : new Date(), artifactId, packaging, ext);
         ivyModuleDescriptor.addArtifact("master", mainArtifact);
     }