diff --git a/src/ISO8601.cpp b/src/ISO8601.cpp
index a3eccc6fe..f75939878 100644
--- a/src/ISO8601.cpp
+++ b/src/ISO8601.cpp
@@ -840,6 +840,14 @@ bool ISO8601p::parse (const std::string& input, std::string::size_type& start)
   return false;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+std::string ISO8601d::toEpochString ()
+{
+  std::stringstream epoch;
+  epoch << _date;
+  return epoch.str ();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 double ISO8601d::toJulian ()
 {
diff --git a/src/ISO8601.h b/src/ISO8601.h
index b0aec7e6f..45e4796b3 100644
--- a/src/ISO8601.h
+++ b/src/ISO8601.h
@@ -46,6 +46,7 @@ public:
   operator time_t () const;
   bool parse (const std::string&, std::string::size_type&, const std::string& format = "");
 
+  std::string toEpochString ();
   double toJulian ();
   void toMDY (int&, int&, int&);