diff --git a/main/config.h b/main/config.h
index 2e24ca6..f8c3d6c 100644
--- a/main/config.h
+++ b/main/config.h
@@ -213,6 +213,7 @@ const PROGMEM char *mqtt_payload_unavailable = "offline";
 // Define global variables for Others settings
 bool others_haa;
 String others_haa_topic;
+String timezone = "ICT-7"; // Set timezone to Vietnam Standard Time
 
 // Define global variables for HA topics
 String ha_power_set_topic;
diff --git a/main/html_pages.h b/main/html_pages.h
index 382aea6..33c1a2d 100644
--- a/main/html_pages.h
+++ b/main/html_pages.h
@@ -126,6 +126,11 @@ const char html_page_others[] PROGMEM =
                         "<br/>"
                         "<input type='number' id='rx_pin' step='1' min='0' max='33' name='rx_pin' placeholder=' ' value='_RX_PIN_'>"
                     "</p>"
+                    "<p><b>_TXT_OTHERS_TIME_ZONE_</b>(<a href='https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv'>_SEE_TZ_LIST</a>)"
+                        "<br/>"
+                        "<input id='tz' name='tz' placeholder=' ' value='_TIME_ZONE_' "
+						"autocomplete='off' autocorrect='off' autocapitalize='off' spellcheck='false'>"
+                    "</p>"
                     "<br/>"
                     "<button name='save' type='submit' class='button bgrn'>_TXT_SAVE_</button>"
                 "</form>"
diff --git a/main/language_translations.h b/main/language_translations.h
index edbe6b0..4ba1561 100644
--- a/main/language_translations.h
+++ b/main/language_translations.h
@@ -125,6 +125,9 @@ MAKE_WORD_TRANSLATION(txt_others_debug_packets, en::txt_others_debug_packets, vi
 MAKE_WORD_TRANSLATION(txt_others_debug_log, en::txt_others_debug_log, vi::txt_others_debug_log, da::txt_others_debug_log, de::txt_others_debug_log, es::txt_others_debug_log, fr::txt_others_debug_log, it::txt_others_debug_log, ja::txt_others_debug_log, zh::txt_others_debug_log, ca::txt_others_debug_log)                                             // TODO translate
 MAKE_WORD_TRANSLATION(txt_others_tx_pin, en::txt_others_tx_pin, vi::txt_others_tx_pin, da::txt_others_tx_pin, de::txt_others_tx_pin, es::txt_others_tx_pin, fr::txt_others_tx_pin, it::txt_others_tx_pin, ja::txt_others_tx_pin, zh::txt_others_tx_pin, ca::txt_others_tx_pin)                                             // TODO translate
 MAKE_WORD_TRANSLATION(txt_others_rx_pin, en::txt_others_rx_pin, vi::txt_others_rx_pin, da::txt_others_rx_pin, de::txt_others_rx_pin, es::txt_others_rx_pin, fr::txt_others_rx_pin, it::txt_others_rx_pin, ja::txt_others_rx_pin, zh::txt_others_rx_pin, ca::txt_others_rx_pin)                                             // TODO translate
+MAKE_WORD_TRANSLATION(txt_others_tz, en::txt_others_tz, vi::txt_others_tz, da::txt_others_tz, de::txt_others_tz, es::txt_others_tz, fr::txt_others_tz, it::txt_others_tz, ja::txt_others_tz, zh::txt_others_tz, ca::txt_others_tz)                                             // TODO translate
+MAKE_WORD_TRANSLATION(txt_others_tz_list, en::txt_others_tz_list, vi::txt_others_tz_list, da::txt_others_tz_list, de::txt_others_tz_list, es::txt_others_tz_list, fr::txt_others_tz_list, it::txt_others_tz_list, ja::txt_others_tz_list, zh::txt_others_tz_list, ca::txt_others_tz_list)                                             // TODO translate
+
 // Page Status
 MAKE_WORD_TRANSLATION(txt_status_title, en::txt_status_title, vi::txt_status_title, da::txt_status_title, de::txt_status_title, es::txt_status_title, fr::txt_status_title, it::txt_status_title, ja::txt_status_title, zh::txt_status_title, ca::txt_status_title)                                                                   // TODO translate
 MAKE_WORD_TRANSLATION(txt_status_hvac, en::txt_status_hvac, vi::txt_status_hvac, da::txt_status_hvac, de::txt_status_hvac, es::txt_status_hvac, fr::txt_status_hvac, it::txt_status_hvac, ja::txt_status_hvac, zh::txt_status_hvac, ca::txt_status_hvac)                                                                              // TODO translate
diff --git a/main/languages/ca-ES.h b/main/languages/ca-ES.h
index 8e009f9..3e459b8 100644
--- a/main/languages/ca-ES.h
+++ b/main/languages/ca-ES.h
@@ -95,6 +95,8 @@ namespace ca
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
 
   // Page Status
   const char txt_status_title[] PROGMEM = "Estat";
diff --git a/main/languages/da-DA.h b/main/languages/da-DA.h
index d3dfc6b..09ddc7c 100644
--- a/main/languages/da-DA.h
+++ b/main/languages/da-DA.h
@@ -94,6 +94,8 @@ namespace da
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "Status";
diff --git a/main/languages/de-DE.h b/main/languages/de-DE.h
index 3ea02e7..ba43dd9 100644
--- a/main/languages/de-DE.h
+++ b/main/languages/de-DE.h
@@ -94,7 +94,9 @@ namespace de
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
-  
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
+
   // Page Status
   const char txt_status_title[] PROGMEM = "Status";
   const char txt_status_hvac[] PROGMEM = "HVAC Status";
diff --git a/main/languages/en-GB.h b/main/languages/en-GB.h
index b9ddeb4..513021a 100644
--- a/main/languages/en-GB.h
+++ b/main/languages/en-GB.h
@@ -95,7 +95,9 @@ namespace en
   const char txt_others_debug_log[] PROGMEM = "MQTT debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
-
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
+  
   // Page Status
   const char txt_status_title[] PROGMEM = "Status";
   const char txt_status_hvac[] PROGMEM = "HVAC Status";
diff --git a/main/languages/es-ES.h b/main/languages/es-ES.h
index 65f7c3f..46d6e4a 100644
--- a/main/languages/es-ES.h
+++ b/main/languages/es-ES.h
@@ -95,6 +95,8 @@ namespace es
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "Estado";
diff --git a/main/languages/fr-FR.h b/main/languages/fr-FR.h
index cd22bc5..9d517a8 100644
--- a/main/languages/fr-FR.h
+++ b/main/languages/fr-FR.h
@@ -95,6 +95,8 @@ namespace fr
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "Etats";
diff --git a/main/languages/it-IT.h b/main/languages/it-IT.h
index 0a997e0..8d3c243 100644
--- a/main/languages/it-IT.h
+++ b/main/languages/it-IT.h
@@ -95,6 +95,8 @@ namespace it
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "Stato";
diff --git a/main/languages/ja-JP.h b/main/languages/ja-JP.h
index 31dc90f..708311e 100644
--- a/main/languages/ja-JP.h
+++ b/main/languages/ja-JP.h
@@ -95,6 +95,8 @@ namespace ja
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "ステータス";
diff --git a/main/languages/vi-VN.h b/main/languages/vi-VN.h
index 2798841..9205238 100644
--- a/main/languages/vi-VN.h
+++ b/main/languages/vi-VN.h
@@ -95,6 +95,8 @@ namespace vi
   const char txt_others_debug_log[] PROGMEM = "MQTT gỡ lỗi nhật ký";
   const char txt_others_tx_pin[] PROGMEM = "Chân TX (ESP32, 0 dùng UART1)";
   const char txt_others_rx_pin[] PROGMEM = "Chân RX (ESP32, 0 dùng UART1)";
+  const char txt_others_tz[] PROGMEM = "Múi giờ";
+  const char txt_others_tz_list[] PROGMEM = "Xem danh sách";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "Trạng thái";
diff --git a/main/languages/zh-CN.h b/main/languages/zh-CN.h
index c29078d..3544101 100644
--- a/main/languages/zh-CN.h
+++ b/main/languages/zh-CN.h
@@ -95,6 +95,8 @@ namespace zh
   const char txt_others_debug_log[] PROGMEM = "MQTT topic debug logs";
   const char txt_others_tx_pin[] PROGMEM = "TX pin (ESP32, 0 use UART1)";
   const char txt_others_rx_pin[] PROGMEM = "RX pin (ESP32, 0 use UART1)";
+  const char txt_others_tz[] PROGMEM = "Timezone";
+  const char txt_others_tz_list[] PROGMEM = "See list";
   
   // Page Status
   const char txt_status_title[] PROGMEM = "状态";
diff --git a/main/main.cpp b/main/main.cpp
index 2dc5444..444ad7c 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -540,7 +540,7 @@ bool loadOthers()
     return false;
   }
   // Allocate document capacity.
-  const size_t capacity = JSON_OBJECT_SIZE(6) + 300;
+  const size_t capacity = JSON_OBJECT_SIZE(7) + 350;
   DynamicJsonDocument doc(capacity);
   deserializeJson(doc, configFile);
   // unit
@@ -574,6 +574,10 @@ bool loadOthers()
       HP_RX = atoi(rxPin.c_str());
     }
   }
+  if (doc.containsKey("tz")) // check key to prevent data is "null" if not exist
+  {
+    timezone = doc["tz"].as<String>();
+  }
   return true;
 }
 
@@ -679,10 +683,10 @@ void saveWifi(String apSsid, const String& apPwd, String hostName, const String&
   configFile.close();
 }
 
-void saveOthers(const String& haa, const String& haat, const String& debugPckts, const String& debugLogs, const String& txPin, const String& rxPin)
+void saveOthers(const String& haa, const String& haat, const String& debugPckts, const String& debugLogs, const String& txPin, const String& rxPin, const String& tz)
 {
   // Allocate document capacity.
-  const size_t capacity = JSON_OBJECT_SIZE(6) + 300;
+  const size_t capacity = JSON_OBJECT_SIZE(7) + 350;
   DynamicJsonDocument doc(capacity);
   doc["haa"] = haa;
   doc["haat"] = haat;
@@ -690,6 +694,7 @@ void saveOthers(const String& haa, const String& haat, const String& debugPckts,
   doc["debugLogs"] = debugLogs;
   doc["txPin"] = txPin;
   doc["rxPin"] = rxPin;
+  doc["tz"] = tz;
   File configFile = SPIFFS.open(others_conf, "w");
   if (!configFile)
   {
@@ -704,7 +709,7 @@ void saveCurrentOthers()
   String haa = others_haa ? "ON" : "OFF";
   String debugPckts = _debugModePckts ? "ON" : "OFF";
   String debugLogs = _debugModeLogs ? "ON" : "OFF";
-  saveOthers(haa, others_haa_topic, debugPckts, debugLogs, String(HP_TX), String(HP_RX));
+  saveOthers(haa, others_haa_topic, debugPckts, debugLogs, String(HP_TX), String(HP_RX), timezone);
 }
 
 // Initialize captive portal page
@@ -1130,7 +1135,7 @@ void handleOthers(AsyncWebServerRequest *request)
   checkLogin(request);
   if (request->hasArg("save"))
   {
-    saveOthers(request->arg("HAA"), request->arg("haat"), request->arg("DebugPckts"), request->arg("DebugLogs"), request->arg("tx_pin"), request->arg("rx_pin"));
+    saveOthers(request->arg("HAA"), request->arg("haat"), request->arg("DebugPckts"), request->arg("DebugLogs"), request->arg("tx_pin"), request->arg("rx_pin"), request->arg("tz"));
     String saveRebootPage = FPSTR(html_page_save_reboot);
     // localize
     saveRebootPage.replace("_TXT_M_SAVE_", translatedWord(FL_(txt_m_save)));
@@ -1147,6 +1152,8 @@ void handleOthers(AsyncWebServerRequest *request)
     othersPage.replace("_TXT_OTHERS_HATOPIC_", translatedWord(FL_(txt_others_hatopic)));
     othersPage.replace("_TXT_OTHERS_DEBUG_PCKTS_", translatedWord(FL_(txt_others_debug_packets)));
     othersPage.replace("_TXT_OTHERS_DEBUG_LOGS_", translatedWord(FL_(txt_others_debug_log)));
+    othersPage.replace("_TXT_OTHERS_TIME_ZONE_", translatedWord(FL_(txt_others_tz)));
+    othersPage.replace("_SEE_TZ_LIST", translatedWord(FL_(txt_others_tz_list)));
     othersPage.replace("_TXT_TX_PIN_", translatedWord(FL_(txt_others_tx_pin)));
     othersPage.replace("_TXT_RX_PIN_", translatedWord(FL_(txt_others_rx_pin)));
     othersPage.replace("_TXT_F_ON_", translatedWord(FL_(txt_f_on)));
@@ -1157,6 +1164,7 @@ void handleOthers(AsyncWebServerRequest *request)
     othersPage.replace("_HAA_TOPIC_", others_haa_topic);
     othersPage.replace("_TX_PIN_", String(HP_TX));
     othersPage.replace("_RX_PIN_", String(HP_RX));
+    othersPage.replace("_TIME_ZONE_", timezone);
     if (others_haa)
     {
       othersPage.replace("_HAA_ON_", "selected");