diff --git a/src/COMPRESS/dump_xyz_gz.cpp b/src/COMPRESS/dump_xyz_gz.cpp
index f017cb3b3e..06561c6d9a 100644
--- a/src/COMPRESS/dump_xyz_gz.cpp
+++ b/src/COMPRESS/dump_xyz_gz.cpp
@@ -93,12 +93,11 @@ void DumpXYZGZ::openfile()
 void DumpXYZGZ::write_header(bigint ndump)
 {
   if (me == 0) {
-    std::string header = fmt::format("{}\n", ndump);
-    if (time_flag)
-      fprintf(fp,"Atoms. Timestep: " BIGINT_FORMAT " Time: %f\n",
-              update->ntimestep, compute_time());
-    else
-      header += fmt::format("Atoms. Timestep: {}\n", update->ntimestep);
+    auto header = fmt::format("{}\n", ndump);
+    if (time_flag) {
+      double tcurrent = update->atime + (update->ntimestep-update->atimestep) + update->dt;
+      header += fmt::format(" Atoms. Timestep: {} Time: {:.6f}\n", update->ntimestep, tcurrent);
+    } else header += fmt::format(" Atoms. Timestep: {}\n", update->ntimestep);
     writer.write(header.c_str(), header.length());
   }
 }
diff --git a/src/COMPRESS/dump_xyz_zstd.cpp b/src/COMPRESS/dump_xyz_zstd.cpp
index 46833f3c74..c4748b4ac3 100644
--- a/src/COMPRESS/dump_xyz_zstd.cpp
+++ b/src/COMPRESS/dump_xyz_zstd.cpp
@@ -101,12 +101,11 @@ void DumpXYZZstd::openfile()
 void DumpXYZZstd::write_header(bigint ndump)
 {
   if (me == 0) {
-    std::string header = fmt::format("{}\n", ndump);
-    if (time_flag)
-      fprintf(fp,"Atoms. Timestep: " BIGINT_FORMAT " Time: %f\n",
-              update->ntimestep, compute_time());
-    else
-      fprintf(fp,"Atoms. Timestep: " BIGINT_FORMAT "\n",update->ntimestep);
+    auto header = fmt::format("{}\n", ndump);
+    if (time_flag) {
+      double tcurrent = update->atime + (update->ntimestep-update->atimestep) + update->dt;
+      header += fmt::format(" Atoms. Timestep: {} Time: {:.6f}\n", update->ntimestep, tcurrent);
+    } else header += fmt::format(" Atoms. Timestep: {}\n", update->ntimestep);
     writer.write(header.c_str(), header.length());
   }
 }
diff --git a/src/dump_xyz.cpp b/src/dump_xyz.cpp
index 949ddf1a11..e90243fd1f 100644
--- a/src/dump_xyz.cpp
+++ b/src/dump_xyz.cpp
@@ -130,12 +130,10 @@ int DumpXYZ::modify_param(int narg, char **arg)
 void DumpXYZ::write_header(bigint n)
 {
   if (me == 0) {
-    fprintf(fp,BIGINT_FORMAT "\n",n);
-    if (time_flag)
-      fprintf(fp,"Atoms. Timestep: " BIGINT_FORMAT " Time: %f\n",
-              update->ntimestep, compute_time());
-    else
-      fprintf(fp,"Atoms. Timestep: " BIGINT_FORMAT "\n",update->ntimestep);
+    if (time_flag) {
+      double tcurrent = update->atime + (update->ntimestep-update->atimestep) + update->dt;
+      fmt::print(fp,"{}\n Atoms. Timestep: {} Time: {:.6f}\n", n, update->ntimestep, tcurrent);
+    } else fmt::print(fp,"{}\n Atoms. Timestep: {}\n", n, update->ntimestep);
   }
 }