diff --git a/src/sys/net/hasp_time.cpp b/src/sys/net/hasp_time.cpp
index 6f445c8a..37beca4e 100644
--- a/src/sys/net/hasp_time.cpp
+++ b/src/sys/net/hasp_time.cpp
@@ -65,7 +65,7 @@ String time_zone_to_possix(const char* timezone)
         int offset           = atoi(timezone + 7);
         const uint16_t gmt[] = {TZ_ETC_GMT__14, TZ_ETC_GMT__13, TZ_ETC_GMT__12, TZ_ETC_GMT__11, TZ_ETC_GMT__10,
                                 TZ_ETC_GMT__9,  TZ_ETC_GMT__8,  TZ_ETC_GMT__7,  TZ_ETC_GMT__6,  TZ_ETC_GMT__5,
-                                TZ_ETC_GMT__4,  TZ_ETC_GMT__3,  TZ_ETC_GMT__2,  TZ_ETC_GMT__1,  TZ_ETC_GMT0,
+                                TZ_ETC_GMT__4,  TZ_ETC_GMT__3,  TZ_ETC_GMT__2,  TZ_ETC_GMT__1,  TZ_ETC_GMT,
                                 TZ_ETC_GMT1,    TZ_ETC_GMT2,    TZ_ETC_GMT3,    TZ_ETC_GMT4,    TZ_ETC_GMT5,
                                 TZ_ETC_GMT6,    TZ_ETC_GMT7,    TZ_ETC_GMT8,    TZ_ETC_GMT9,    TZ_ETC_GMT10,
                                 TZ_ETC_GMT11,   TZ_ETC_GMT12};
diff --git a/src/sys/net/hasp_time.h b/src/sys/net/hasp_time.h
index c616e873..5d1b3e26 100644
--- a/src/sys/net/hasp_time.h
+++ b/src/sys/net/hasp_time.h
@@ -25,7 +25,7 @@ bool timeSetConfig(const JsonObject& settings);
 #endif
 
 #ifndef TIMEZONE
-#define TIMEZONE "Etc/GMT0"
+#define TIMEZONE "Etc/Universal"
 #endif
 #ifndef TIMEREGION
 #define TIMEREGION "etc"