diff --git a/src/app/definition.cpp b/src/app/definition.cpp
index dff41f7..0d39331 100644
--- a/src/app/definition.cpp
+++ b/src/app/definition.cpp
@@ -67,3 +67,18 @@ char *lastIndexOf(char *str, const char character)
 
   return last;
 }
+
+
+char *monthNumTo3LetterAbbreviation(char *buffer, const uint8_t monthNumber)
+{
+   static const char monthArray[][4] = {{"Jan"},{"Feb"},{"Mar"},{"Apr"},{"May"},{"Jun"},{"Jul"},{"Aug"},{"Sep"},{"Oct"},{"Nov"},{"Dec"}};
+
+  if(buffer == NULL) return NULL;
+  
+  if(monthNumber >= 1 && monthNumber <= 12)
+    strcpy_P(buffer, monthArray[monthNumber-1]);
+  else //Default is january  
+    strcpy_P(buffer, monthArray[0]);
+    
+  return buffer;
+}
diff --git a/src/app/definition.h b/src/app/definition.h
index 55ef94f..e2fc1f7 100644
--- a/src/app/definition.h
+++ b/src/app/definition.h
@@ -57,4 +57,6 @@ char *lastIndexOf(char *str, const char character);
 
 char *dateTimeFormater(char *pointer, const uint8_t value, const char character);
 
+char *monthNumTo3LetterAbbreviation(char *month, const uint8_t monthNumber);
+
 #endif //DEFINITION_H