diff --git a/cores/esp8266/time.cpp b/cores/esp8266/time.cpp
index ae5a187651..1904f1fd05 100644
--- a/cores/esp8266/time.cpp
+++ b/cores/esp8266/time.cpp
@@ -157,6 +157,10 @@ void configTime(int timezone_sec, int daylightOffset_sec, const char* server1, c
 
     ***/
 
+    const char* tzenv = getenv("TZ");
+    if (timezone_sec == 0 && daylightOffset_sec == 0 && tzenv != nullptr)
+        return configTime(tzenv, server1, server2, server3);
+
     static char gmt[] = "GMT";
 
     _timezone = timezone_sec + daylightOffset_sec;