diff --git a/src/ISO8601.cpp b/src/ISO8601.cpp
index a8ef2e6e6..df30ac7e7 100644
--- a/src/ISO8601.cpp
+++ b/src/ISO8601.cpp
@@ -27,6 +27,7 @@
 #include <cmake.h>
 #include <sstream>
 #include <stdlib.h>
+#include <assert.h>
 #include <Lexer.h>
 #include <ISO8601.h>
 #include <Date.h>
@@ -825,6 +826,30 @@ int ISO8601d::daysInYear (int year)
   return ISO8601d::leapYear (year) ? 366 : 365;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+std::string ISO8601d::monthName (int month)
+{
+  static const char* months[12] =
+  {
+    STRING_DATE_JANUARY,
+    STRING_DATE_FEBRUARY,
+    STRING_DATE_MARCH,
+    STRING_DATE_APRIL,
+    STRING_DATE_MAY,
+    STRING_DATE_JUNE,
+    STRING_DATE_JULY,
+    STRING_DATE_AUGUST,
+    STRING_DATE_SEPTEMBER,
+    STRING_DATE_OCTOBER,
+    STRING_DATE_NOVEMBER,
+    STRING_DATE_DECEMBER,
+  };
+
+  assert (month > 0);
+  assert (month <= 12);
+  return ucFirst (months[month - 1]);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // Static
 int ISO8601d::dayOfWeek (const std::string& input)
diff --git a/src/ISO8601.h b/src/ISO8601.h
index ff083ce05..d82a9895b 100644
--- a/src/ISO8601.h
+++ b/src/ISO8601.h
@@ -47,6 +47,7 @@ public:
   static bool leapYear (int);
   static int daysInMonth (int, int);
   static int daysInYear (int);
+  static std::string monthName (int);
 
   static int dayOfWeek (const std::string&);
 
diff --git a/test/iso8601d.t.cpp b/test/iso8601d.t.cpp
index 98f2433e0..61aaad248 100644
--- a/test/iso8601d.t.cpp
+++ b/test/iso8601d.t.cpp
@@ -71,7 +71,7 @@ void testParse (
 ////////////////////////////////////////////////////////////////////////////////
 int main (int argc, char** argv)
 {
-  UnitTest t (796);
+  UnitTest t (808);
 
   ISO8601d iso;
   std::string::size_type start = 0;
@@ -232,6 +232,20 @@ int main (int argc, char** argv)
     t.is (ISO8601d::daysInMonth (2, 2008), 29, "29 days in February 2008");
     t.is (ISO8601d::daysInMonth (2, 2007), 28, "28 days in February 2007");
 
+    // Names.
+    t.is (ISO8601d::monthName (1), "January",   "1 = January");
+    t.is (ISO8601d::monthName (2), "February",  "2 = February");
+    t.is (ISO8601d::monthName (3), "March",     "3 = March");
+    t.is (ISO8601d::monthName (4), "April",     "4 = April");
+    t.is (ISO8601d::monthName (5), "May",       "5 = May");
+    t.is (ISO8601d::monthName (6), "June",      "6 = June");
+    t.is (ISO8601d::monthName (7), "July",      "7 = July");
+    t.is (ISO8601d::monthName (8), "August",    "8 = August");
+    t.is (ISO8601d::monthName (9), "September", "9 = September");
+    t.is (ISO8601d::monthName (10), "October",  "10 = October");
+    t.is (ISO8601d::monthName (11), "November", "11 = November");
+    t.is (ISO8601d::monthName (12), "December", "12 = December");
+
     t.is (ISO8601d::dayOfWeek ("SUNDAY"),    0, "SUNDAY == 0");
     t.is (ISO8601d::dayOfWeek ("sunday"),    0, "sunday == 0");
     t.is (ISO8601d::dayOfWeek ("Sunday"),    0, "Sunday == 0");