diff --git a/src/Date.cpp b/src/Date.cpp
index 9d6b1f2b0..9b0f0776a 100644
--- a/src/Date.cpp
+++ b/src/Date.cpp
@@ -537,6 +537,20 @@ bool Date::valid (const int m, const int d, const int y)
   return true;
 }
 
+////////////////////////////////////////////////////////////////////////////////
+// Julian
+bool Date::valid (const int d, const int y)
+{
+  // Check that the year is valid.
+  if (y < 0)
+    return false;
+
+  if (d < 0 || d > 365)
+    return false;
+
+  return true;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 bool Date::leapYear (int year)
 {
diff --git a/src/Date.h b/src/Date.h
index 48d902b0a..7124536e1 100644
--- a/src/Date.h
+++ b/src/Date.h
@@ -60,6 +60,7 @@ public:
   static bool valid (const std::string&, const std::string& format = "m/d/Y");
   static bool valid (const int, const int, const int, const int, const int, const int);
   static bool valid (const int, const int, const int);
+  static bool valid (const int, const int);
 
   static time_t easter (int year);
   static bool leapYear (int);