diff --git a/src/WebHandlerImpl.h b/src/WebHandlerImpl.h
index 3d5eca8..4d1463c 100644
--- a/src/WebHandlerImpl.h
+++ b/src/WebHandlerImpl.h
@@ -23,6 +23,7 @@
 
 
 #include "stddef.h"
+#include <time.h>
 
 class AsyncStaticWebHandler: public AsyncWebHandler {
   private:
@@ -47,6 +48,7 @@ class AsyncStaticWebHandler: public AsyncWebHandler {
     AsyncStaticWebHandler& setDefaultFile(const char* filename);
     AsyncStaticWebHandler& setCacheControl(const char* cache_control);
     AsyncStaticWebHandler& setLastModified(const char* last_modified);
+    AsyncStaticWebHandler& setLastModified(struct tm* last_modified);
 };
 
 class AsyncCallbackWebHandler: public AsyncWebHandler {
diff --git a/src/WebHandlers.cpp b/src/WebHandlers.cpp
index 599fae2..4dc5613 100644
--- a/src/WebHandlers.cpp
+++ b/src/WebHandlers.cpp
@@ -62,6 +62,12 @@ AsyncStaticWebHandler& AsyncStaticWebHandler::setLastModified(const char* last_m
   return *this;
 }
 
+AsyncStaticWebHandler& AsyncStaticWebHandler::setLastModified(struct tm* last_modified){
+  char result[30];
+  strftime (result,30,"%a, %d %b %Y %H:%M:%S %Z", last_modified);
+  return setLastModified((const char *)result);
+}
+
 bool AsyncStaticWebHandler::canHandle(AsyncWebServerRequest *request)
 {
   if (request->method() == HTTP_GET &&