diff --git a/src/RedirectablePrint.cpp b/src/RedirectablePrint.cpp
index d3f39c377..16906e2e0 100644
--- a/src/RedirectablePrint.cpp
+++ b/src/RedirectablePrint.cpp
@@ -99,7 +99,7 @@ size_t RedirectablePrint::log(const char *logLevel, const char *format, ...)
 
         // If we are the first message on a report, include the header
         if (!isContinuationMessage) {
-            uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice);
+            uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice, true); // display local time on logfile
             if (rtc_sec > 0) {
                 long hms = rtc_sec % SEC_PER_DAY;
                 // hms += tz.tz_dsttime * SEC_PER_HOUR;
diff --git a/src/gps/GPS.cpp b/src/gps/GPS.cpp
index a6f68f2ef..6a0e3e44a 100644
--- a/src/gps/GPS.cpp
+++ b/src/gps/GPS.cpp
@@ -1379,7 +1379,7 @@ bool GPS::lookForLocation()
     t.tm_mon = reader.date.month() - 1;
     t.tm_year = reader.date.year() - 1900;
     t.tm_isdst = false;
-    p.timestamp = mktime(&t);
+    p.timestamp = gm_mktime(&t);
 
     // Nice to have, if available
     if (reader.satellites.isUpdated()) {
diff --git a/src/gps/NMEAWPL.cpp b/src/gps/NMEAWPL.cpp
index cdac3bb27..71943b76c 100644
--- a/src/gps/NMEAWPL.cpp
+++ b/src/gps/NMEAWPL.cpp
@@ -75,10 +75,10 @@ uint32_t printWPL(char *buf, size_t bufsz, const meshtastic_Position &pos, const
 uint32_t printGGA(char *buf, size_t bufsz, const meshtastic_Position &pos)
 {
     GeoCoord geoCoord(pos.latitude_i, pos.longitude_i, pos.altitude);
-    tm *t = localtime((time_t *)&pos.timestamp);
+    tm *t = gmtime((time_t *)&pos.timestamp);
     if (getRTCQuality() > 0) { // use the device clock if we got time from somewhere. If not, use the GPS timestamp.
         uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice);
-        t = localtime((time_t *)&rtc_sec);
+        t = gmtime((time_t *)&rtc_sec);
     }
 
     uint32_t len = snprintf(
diff --git a/src/gps/RTC.cpp b/src/gps/RTC.cpp
index 10e9e0331..26af7cac2 100644
--- a/src/gps/RTC.cpp
+++ b/src/gps/RTC.cpp
@@ -40,7 +40,7 @@ void readFromRTC()
         t.tm_hour = rtc.getHour();
         t.tm_min = rtc.getMinute();
         t.tm_sec = rtc.getSecond();
-        tv.tv_sec = mktime(&t);
+        tv.tv_sec = gm_mktime(&t);
         tv.tv_usec = 0;
         LOG_DEBUG("Read RTC time from RV3028 as %ld\n", tv.tv_sec);
         timeStartMsec = now;
@@ -68,7 +68,7 @@ void readFromRTC()
         t.tm_hour = tc.hour;
         t.tm_min = tc.minute;
         t.tm_sec = tc.second;
-        tv.tv_sec = mktime(&t);
+        tv.tv_sec = gm_mktime(&t);
         tv.tv_usec = 0;
         LOG_DEBUG("Read RTC time from PCF8563 as %ld\n", tv.tv_sec);
         timeStartMsec = now;
@@ -128,7 +128,7 @@ bool perhapsSetRTC(RTCQuality q, const struct timeval *tv)
 #else
             rtc.initI2C();
 #endif
-            tm *t = localtime(&tv->tv_sec);
+            tm *t = gmtime(&tv->tv_sec);
             rtc.setTime(t->tm_year + 1900, t->tm_mon + 1, t->tm_wday, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
             LOG_DEBUG("RV3028_RTC setTime %02d-%02d-%02d %02d:%02d:%02d %ld\n", t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
                       t->tm_hour, t->tm_min, t->tm_sec, tv->tv_sec);
@@ -142,7 +142,7 @@ bool perhapsSetRTC(RTCQuality q, const struct timeval *tv)
 #else
             rtc.begin();
 #endif
-            tm *t = localtime(&tv->tv_sec);
+            tm *t = gmtime(&tv->tv_sec);
             rtc.setDateTime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
             LOG_DEBUG("PCF8563_RTC setDateTime %02d-%02d-%02d %02d:%02d:%02d %ld\n", t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
                       t->tm_hour, t->tm_min, t->tm_sec, tv->tv_sec);
@@ -175,7 +175,9 @@ bool perhapsSetRTC(RTCQuality q, struct tm &t)
     The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970
     (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z).
     */
-    time_t res = mktime(&t);
+    // horrible hack to make mktime TZ agnostic - best practise according to
+    // https://www.gnu.org/software/libc/manual/html_node/Broken_002ddown-Time.html
+    time_t res = gm_mktime(&t);
     struct timeval tv;
     tv.tv_sec = res;
     tv.tv_usec = 0; // time.centisecond() * (10 / 1000);
@@ -189,14 +191,33 @@ bool perhapsSetRTC(RTCQuality q, struct tm &t)
     }
 }
 
+/**
+ * Returns the timezone offset in seconds.
+ *
+ * @return The timezone offset in seconds.
+ */
+int32_t getTZOffset()
+{
+    time_t now;
+    struct tm *gmt;
+    now = time(NULL);
+    gmt = gmtime(&now);
+    gmt->tm_isdst = -1;
+    return (int16_t)difftime(now, mktime(gmt));
+}
+
 /**
  * Returns the current time in seconds since the Unix epoch (January 1, 1970).
  *
  * @return The current time in seconds since the Unix epoch.
  */
-uint32_t getTime()
+uint32_t getTime(bool local)
 {
-    return (((uint32_t)millis() - timeStartMsec) / 1000) + zeroOffsetSecs;
+    if (local) {
+        return (((uint32_t)millis() - timeStartMsec) / 1000) + zeroOffsetSecs + getTZOffset();
+    } else {
+        return (((uint32_t)millis() - timeStartMsec) / 1000) + zeroOffsetSecs;
+    }
 }
 
 /**
@@ -205,7 +226,19 @@ uint32_t getTime()
  * @param minQuality The minimum quality of the RTC time required for it to be considered valid.
  * @return The current time from the RTC if it meets the minimum quality requirement, or 0 if the time is not valid.
  */
-uint32_t getValidTime(RTCQuality minQuality)
+uint32_t getValidTime(RTCQuality minQuality, bool local)
 {
-    return (currentQuality >= minQuality) ? getTime() : 0;
+    return (currentQuality >= minQuality) ? getTime(local) : 0;
+}
+
+time_t gm_mktime(struct tm *tm)
+{
+    setenv("TZ", "GMT0", 1);
+    time_t res = mktime(tm);
+    if (*config.device.tzdef) {
+        setenv("TZ", config.device.tzdef, 1);
+    } else {
+        setenv("TZ", "UTC0", 1);
+    }
+    return res;
 }
diff --git a/src/gps/RTC.h b/src/gps/RTC.h
index 527b31f46..0561819bd 100644
--- a/src/gps/RTC.h
+++ b/src/gps/RTC.h
@@ -29,13 +29,15 @@ bool perhapsSetRTC(RTCQuality q, const struct timeval *tv);
 bool perhapsSetRTC(RTCQuality q, struct tm &t);
 
 /// Return time since 1970 in secs.  While quality is RTCQualityNone we will be returning time based at zero
-uint32_t getTime();
+uint32_t getTime(bool local = false);
 
 /// Return time since 1970 in secs.  If quality is RTCQualityNone return zero
-uint32_t getValidTime(RTCQuality minQuality);
+uint32_t getValidTime(RTCQuality minQuality, bool local = false);
 
 void readFromRTC();
 
+time_t gm_mktime(struct tm *tm);
+
 #define SEC_PER_DAY 86400
 #define SEC_PER_HOUR 3600
 #define SEC_PER_MIN 60
\ No newline at end of file
diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index be063ee53..969d98863 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -1896,7 +1896,7 @@ void DebugInfo::drawFrameSettings(OLEDDisplay *display, OLEDDisplayUiState *stat
     // Show uptime as days, hours, minutes OR seconds
     std::string uptime = screen->drawTimeDelta(days, hours, minutes, seconds);
 
-    uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice);
+    uint32_t rtc_sec = getValidTime(RTCQuality::RTCQualityDevice, true); // Display local timezone
     if (rtc_sec > 0) {
         long hms = rtc_sec % SEC_PER_DAY;
         // hms += tz.tz_dsttime * SEC_PER_HOUR;
diff --git a/src/main.cpp b/src/main.cpp
index c2630c88f..f484e51b2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -682,6 +682,15 @@ void setup()
     // Initialize the screen first so we can show the logo while we start up everything else.
     screen = new graphics::Screen(screen_found, screen_model, screen_geometry);
 
+    // setup TZ prior to time actions.
+    if (*config.device.tzdef) {
+        setenv("TZ", config.device.tzdef, 1);
+    } else {
+        setenv("TZ", "GMT0", 1);
+    }
+    tzset();
+    LOG_DEBUG("Set Timezone to %s\n", getenv("TZ"));
+
     readFromRTC(); // read the main CPU RTC at first (in case we can't get GPS time)
 
 #if !MESHTASTIC_EXCLUDE_GPS
diff --git a/version.properties b/version.properties
index 5f162b8ae..6aedf1e72 100644
--- a/version.properties
+++ b/version.properties
@@ -1,4 +1,4 @@
 [VERSION]  
 major = 2
 minor = 3
-build = 4
+build = 5