diff --git a/AK/Debug.h.in b/AK/Debug.h.in
index 868faf03705..f4855eec874 100644
--- a/AK/Debug.h.in
+++ b/AK/Debug.h.in
@@ -450,6 +450,10 @@
 #cmakedefine01 TEXTEDITOR_DEBUG
 #endif
 
+#ifndef TIME_ZONE_DEBUG
+#cmakedefine01 TIME_ZONE_DEBUG
+#endif
+
 #ifndef TLS_DEBUG
 #cmakedefine01 TLS_DEBUG
 #endif
diff --git a/Meta/CMake/all_the_debug_macros.cmake b/Meta/CMake/all_the_debug_macros.cmake
index 738c244d45b..5c96e08d3e5 100644
--- a/Meta/CMake/all_the_debug_macros.cmake
+++ b/Meta/CMake/all_the_debug_macros.cmake
@@ -187,6 +187,7 @@ set(TERMCAP_DEBUG ON)
 set(TERMINAL_DEBUG ON)
 set(TEXTEDITOR_DEBUG ON)
 set(THREAD_DEBUG ON)
+set(TIME_ZONE_DEBUG ON)
 set(TLS_DEBUG ON)
 set(TLS_SSL_KEYLOG_DEBUG ON)
 set(TOKENIZER_TRACE_DEBUG ON)