diff --git a/.gitignore b/.gitignore
index db1e0a68f..eabba8255 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,5 +8,5 @@
 .piolibdeps
 .clang_complete
 .gcc-flags.json
-.vscode
 sonoff/user_config_override.h
+build
diff --git a/README.md b/README.md
index 75aac024a..a1542e400 100644
--- a/README.md
+++ b/README.md
@@ -170,7 +170,7 @@ If you like **Sonoff-Tasmota**, give it a star, or fork it and contribute!
 ### Development
 [![Build Status](https://img.shields.io/travis/arendst/Sonoff-Tasmota.svg)](https://travis-ci.org/arendst/Sonoff-Tasmota)
 
-Current version is **5.13.1b** - See [sonoff/_releasenotes.ino](https://github.com/arendst/Sonoff-Tasmota/blob/development/sonoff/_releasenotes.ino) for change information.
+Current version is **5.13.1c** - See [sonoff/_releasenotes.ino](https://github.com/arendst/Sonoff-Tasmota/blob/development/sonoff/_releasenotes.ino) for change information.
 
 ### Quick install
 Download one of the released binaries from https://github.com/arendst/Sonoff-Tasmota/releases and flash it to your hardware as documented in the wiki.
diff --git a/sonoff/_releasenotes.ino b/sonoff/_releasenotes.ino
index fc814d10a..77bc9575d 100644
--- a/sonoff/_releasenotes.ino
+++ b/sonoff/_releasenotes.ino
@@ -1,5 +1,5 @@
-/* 5.13.1b
- * Prep for user entry DST/STD (#2721)
+/* 5.13.1c
+ * Add user entry DST/STD using commands TimeStd and TimeDst with options like 0,0,3,1,2,120 (#2721)
  *
  * 5.13.1a
  * Change user_config.h otaurl to http://sonoff.maddox.co.uk/tasmota/sonoff.bin (#2588, #2602)
diff --git a/sonoff/i18n.h b/sonoff/i18n.h
index ea626017c..365fee826 100644
--- a/sonoff/i18n.h
+++ b/sonoff/i18n.h
@@ -88,6 +88,9 @@
 #define D_JSON_PERIOD "Period"
 #define D_JSON_POWERFACTOR "Factor"
 #define D_JSON_POWERUSAGE "Power"
+#define D_JSON_ACTIVE_POWERUSAGE "ActivePower"
+#define D_JSON_APPARENT_POWERUSAGE "ApparentPower"
+#define D_JSON_REACTIVE_POWERUSAGE "ReactivePower"
 #define D_JSON_PRESSURE "Pressure"
 #define D_JSON_PRESSUREATSEALEVEL "SeaPressure"
 #define D_JSON_PROGRAMFLASHSIZE "ProgramFlashSize"
@@ -224,6 +227,8 @@
   #define D_JSON_RESET_AND_RESTARTING "Reset and Restarting"
   #define D_JSON_ONE_TO_RESET "1 to reset"
 #define D_CMND_TIMEZONE "Timezone"
+#define D_CMND_TIMESTD "TimeStd"
+#define D_CMND_TIMEDST "TimeDst"
 #define D_CMND_ALTITUDE "Altitude"
 #define D_CMND_LEDPOWER "LedPower"
 #define D_CMND_LEDSTATE "LedState"
diff --git a/sonoff/language/bg-BG.h b/sonoff/language/bg-BG.h
index dfaebe802..ebc9d82cd 100644
--- a/sonoff/language/bg-BG.h
+++ b/sonoff/language/bg-BG.h
@@ -121,6 +121,9 @@
 #define D_PORT "Порт"
 #define D_POWER_FACTOR "Фактор на мощността"
 #define D_POWERUSAGE "Мощност"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Налягане"
 #define D_PRESSUREATSEALEVEL "Налягане на морското ниво"
 #define D_PROGRAM_FLASH_SIZE "Размер на флаш паметта за програми"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "хПа"
 #define D_UNIT_SECOND "сек"
 #define D_UNIT_SECTORS "сектори"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "В"
 #define D_UNIT_WATT "Вт"
 #define D_UNIT_WATTHOUR "Вт/ч"
diff --git a/sonoff/language/cs-CZ.h b/sonoff/language/cs-CZ.h
index 49239eef8..73e2098c5 100644
--- a/sonoff/language/cs-CZ.h
+++ b/sonoff/language/cs-CZ.h
@@ -121,6 +121,9 @@
 #define D_PORT "Port"
 #define D_POWER_FACTOR "Účiník"
 #define D_POWERUSAGE "Příkon"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Tlak"
 #define D_PRESSUREATSEALEVEL "Tlak na úrovni hladiny moře"
 #define D_PROGRAM_FLASH_SIZE "Velikost paměti flash"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "sektory"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/de-DE.h b/sonoff/language/de-DE.h
index 0201e00ed..35a9f3dad 100644
--- a/sonoff/language/de-DE.h
+++ b/sonoff/language/de-DE.h
@@ -121,6 +121,9 @@
 #define D_PORT "Port"
 #define D_POWER_FACTOR "Leistungsfaktor"
 #define D_POWERUSAGE "Leistung"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Luftdruck"
 #define D_PRESSUREATSEALEVEL "Luftdruck auf Meereshöhe"
 #define D_PROGRAM_FLASH_SIZE "Ges. Flash Speicher"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sek"
 #define D_UNIT_SECTORS "Sektoren"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/el-GR.h b/sonoff/language/el-GR.h
index c479b3586..e23f629b0 100644
--- a/sonoff/language/el-GR.h
+++ b/sonoff/language/el-GR.h
@@ -121,6 +121,9 @@
 #define D_PORT "Πόρτα"
 #define D_POWER_FACTOR "Παράγοντας ισχύος"
 #define D_POWERUSAGE "Ισχύης"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Πίεση"
 #define D_PRESSUREATSEALEVEL "Πίεση στην επιφάνεια της Θάλασσας"
 #define D_PROGRAM_FLASH_SIZE "Μέγεθος Προγράμματος Flash"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "sectors"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/en-GB.h b/sonoff/language/en-GB.h
index b841f02d5..4f97a5eef 100644
--- a/sonoff/language/en-GB.h
+++ b/sonoff/language/en-GB.h
@@ -121,6 +121,9 @@
 #define D_PORT "Port"
 #define D_POWER_FACTOR "Power Factor"
 #define D_POWERUSAGE "Power"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Pressure"
 #define D_PRESSUREATSEALEVEL "SeaPressure"
 #define D_PROGRAM_FLASH_SIZE "Program Flash Size"
@@ -478,6 +481,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "sectors"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/es-AR.h b/sonoff/language/es-AR.h
index a0f80b73f..2e3eb49ca 100644
--- a/sonoff/language/es-AR.h
+++ b/sonoff/language/es-AR.h
@@ -121,6 +121,9 @@
 #define D_PORT "Puerto"
 #define D_POWER_FACTOR "Factor de Potencia"
 #define D_POWERUSAGE "Potencia"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Presión"
 #define D_PRESSUREATSEALEVEL "Presión al nivel del mar"
 #define D_PROGRAM_FLASH_SIZE "Tamaño de Flash de Programa"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "seg"
 #define D_UNIT_SECTORS "sectores"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/fr-FR.h b/sonoff/language/fr-FR.h
index cae6908ae..26cee81e9 100644
--- a/sonoff/language/fr-FR.h
+++ b/sonoff/language/fr-FR.h
@@ -121,6 +121,9 @@
 #define D_PORT "Port"
 #define D_POWER_FACTOR "Facteur de puissance"
 #define D_POWERUSAGE "Puissance"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Pression"
 #define D_PRESSUREATSEALEVEL "PressionMer"
 #define D_PROGRAM_FLASH_SIZE "Taille Flash Programme"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "secteurs"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/hu-HU.h b/sonoff/language/hu-HU.h
index 773ff3d2e..5ecab817b 100644
--- a/sonoff/language/hu-HU.h
+++ b/sonoff/language/hu-HU.h
@@ -121,6 +121,9 @@
 #define D_PORT "Port"
 #define D_POWER_FACTOR "Teljesítmény tényező"
 #define D_POWERUSAGE "Energiafelhasználás"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Nyomás"
 #define D_PRESSUREATSEALEVEL "Tengerszinti nyomás"
 #define D_PROGRAM_FLASH_SIZE "Program Flash Méret"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "m"
 #define D_UNIT_SECTORS "szektorok"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/it-IT.h b/sonoff/language/it-IT.h
index 2096fe8c3..91808c973 100644
--- a/sonoff/language/it-IT.h
+++ b/sonoff/language/it-IT.h
@@ -121,6 +121,9 @@
 #define D_PORT "Porta"
 #define D_POWER_FACTOR "Fattore di potenza"
 #define D_POWERUSAGE "Potenza"
+#define D_POWERUSAGE_ACTIVE "Potenza Attiva"
+#define D_POWERUSAGE_APPARENT "Potenza Apparente"
+#define D_POWERUSAGE_REACTIVE "Potenza Reattiva"
 #define D_PRESSURE "Pressione"
 #define D_PRESSUREATSEALEVEL "Pressione al livello del mare"
 #define D_PROGRAM_FLASH_SIZE "Dimensione Flash Programma"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "settori"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/nl-NL.h b/sonoff/language/nl-NL.h
index dec9a11de..25727e9bd 100644
--- a/sonoff/language/nl-NL.h
+++ b/sonoff/language/nl-NL.h
@@ -121,6 +121,9 @@
 #define D_PORT "Poort"
 #define D_POWER_FACTOR "Arbeidsfactor"
 #define D_POWERUSAGE "Vermogen"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Luchtdruk"
 #define D_PRESSUREATSEALEVEL "ZeeLuchtdruk"
 #define D_PROGRAM_FLASH_SIZE "Programma Flash Grootte"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "sectoren"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/pl-PL.h b/sonoff/language/pl-PL.h
index 5d30ffd7f..688c3507e 100644
--- a/sonoff/language/pl-PL.h
+++ b/sonoff/language/pl-PL.h
@@ -121,6 +121,9 @@
 #define D_PORT "Port"
 #define D_POWER_FACTOR "Współczynik mocy"
 #define D_POWERUSAGE "Moc"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Ciśnienie"
 #define D_PRESSUREATSEALEVEL "Ciśnienie na poziomie morza"
 #define D_PROGRAM_FLASH_SIZE "Wielkość programu flash"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "sektory"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/pt-BR.h b/sonoff/language/pt-BR.h
index c29cf9bd9..6bf9a6211 100644
--- a/sonoff/language/pt-BR.h
+++ b/sonoff/language/pt-BR.h
@@ -121,6 +121,9 @@
 #define D_PORT "Porta"
 #define D_POWER_FACTOR "Fator de potência"
 #define D_POWERUSAGE "Potência"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Pressão"
 #define D_PRESSUREATSEALEVEL "Pressão ao nível do mar"
 #define D_PROGRAM_FLASH_SIZE "Tamanho do programa na memória"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "s"
 #define D_UNIT_SECTORS "setores"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "W/h"
diff --git a/sonoff/language/pt-PT.h b/sonoff/language/pt-PT.h
index 4605975c3..68d7cd1c5 100644
--- a/sonoff/language/pt-PT.h
+++ b/sonoff/language/pt-PT.h
@@ -121,6 +121,9 @@
 #define D_PORT "Porta"
 #define D_POWER_FACTOR "Factor de Potência"
 #define D_POWERUSAGE "Potência"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Pressão"
 #define D_PRESSUREATSEALEVEL "Pressão ao nível do Mar"
 #define D_PROGRAM_FLASH_SIZE "Tamanho do Programa na Flash"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "hPa"
 #define D_UNIT_SECOND "sec"
 #define D_UNIT_SECTORS "sectors"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "V"
 #define D_UNIT_WATT "W"
 #define D_UNIT_WATTHOUR "Wh"
diff --git a/sonoff/language/ru-RU.h b/sonoff/language/ru-RU.h
index 0de9d88cc..85540343d 100644
--- a/sonoff/language/ru-RU.h
+++ b/sonoff/language/ru-RU.h
@@ -121,6 +121,9 @@
 #define D_PORT "Порт"
 #define D_POWER_FACTOR "Коэффициент Мощности"
 #define D_POWERUSAGE "Мощность"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "Давление"
 #define D_PRESSUREATSEALEVEL "Давление на уровне моря"
 #define D_PROGRAM_FLASH_SIZE "Размер Flash для программ"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "гПа"
 #define D_UNIT_SECOND "сек"
 #define D_UNIT_SECTORS "секторов"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "В"
 #define D_UNIT_WATT "Вт"
 #define D_UNIT_WATTHOUR "ВтЧ"
diff --git a/sonoff/language/zh-CN.h b/sonoff/language/zh-CN.h
index fce4fe3e7..853c68389 100644
--- a/sonoff/language/zh-CN.h
+++ b/sonoff/language/zh-CN.h
@@ -121,6 +121,9 @@
 #define D_PORT "端口"
 #define D_POWER_FACTOR "功率因数"
 #define D_POWERUSAGE "功率"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "气压"
 #define D_PRESSUREATSEALEVEL "海平面气压"
 #define D_PROGRAM_FLASH_SIZE "固件 Flash 大小"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "百帕"
 #define D_UNIT_SECOND "秒"
 #define D_UNIT_SECTORS "扇区"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "伏"
 #define D_UNIT_WATT "瓦"
 #define D_UNIT_WATTHOUR "瓦时"
diff --git a/sonoff/language/zh-TW.h b/sonoff/language/zh-TW.h
index f17caf10e..5986dc804 100644
--- a/sonoff/language/zh-TW.h
+++ b/sonoff/language/zh-TW.h
@@ -121,6 +121,9 @@
 #define D_PORT "端口"
 #define D_POWER_FACTOR "功率因數"
 #define D_POWERUSAGE "功率"
+#define D_POWERUSAGE_ACTIVE "Active Power"
+#define D_POWERUSAGE_APPARENT "Apparent Power"
+#define D_POWERUSAGE_REACTIVE "Reactive Power"
 #define D_PRESSURE "氣壓"
 #define D_PRESSUREATSEALEVEL "海平面氣壓"
 #define D_PROGRAM_FLASH_SIZE "韌體 Flash 大小"
@@ -479,6 +482,8 @@
 #define D_UNIT_PRESSURE "百帕"
 #define D_UNIT_SECOND "秒"
 #define D_UNIT_SECTORS "扇區"
+#define D_UNIT_VA "VA"
+#define D_UNIT_VAR "VAr"
 #define D_UNIT_VOLT "伏"
 #define D_UNIT_WATT "瓦"
 #define D_UNIT_WATTHOUR "瓦時"
diff --git a/sonoff/settings.h b/sonoff/settings.h
index 6dfc4cdeb..ec156c85a 100644
--- a/sonoff/settings.h
+++ b/sonoff/settings.h
@@ -20,7 +20,7 @@
 #ifndef _SETTINGS_H_
 #define _SETTINGS_H_
 
-#define PARAM8_SIZE  23                    // Number of param bytes
+#define PARAM8_SIZE  18                    // Number of param bytes
 
 typedef union {                            // Restricted by MISRA-C Rule 18.4 but so usefull...
   uint32_t data;                           // Allow bit manipulation using SetOption
@@ -159,8 +159,7 @@ struct SYSCFG {
   uint8_t       display_address[8];        // 2D8
   uint8_t       display_dimmer;            // 2E0
   uint8_t       display_size;              // 2E1
-  TimeRule      std_flags;                 // 2E2
-  int16_t       std_offset;                // 2E4 offset from UTC in minutes
+  TimeRule      tflag[2];                  // 2E2
   uint16_t      pwm_frequency;             // 2E6
   power_t       power;                     // 2E8
   uint16_t      pwm_value[MAX_PWMS];       // 2EC
@@ -169,6 +168,10 @@ struct SYSCFG {
   uint8_t       ex_power;                  // 2FA Not used since 5.8.0j
   uint8_t       ledstate;                  // 2FB
   uint8_t       param[PARAM8_SIZE];        // 2FC was domoticz_in_topic until 5.1.6
+  int16_t       toffset[2];                // 30E
+
+  byte          free_312[1];               // 312
+
   char          state_text[4][11];         // 313
   uint8_t       energy_power_delta;        // 33F
   uint16_t      domoticz_update_timer;     // 340
@@ -244,7 +247,9 @@ struct SYSCFG {
   char          ntp_server[3][33];         // 4CE
   byte          ina219_mode;               // 531
   uint16_t      pulse_timer[MAX_PULSETIMERS]; // 532
-  TimeRule      dst_flags;                 // 542
+
+  byte          free_542[2];               // 542
+
   uint32_t      ip_address[4];             // 544
   unsigned long energy_kWhtotal;              // 554
   char          mqtt_fulltopic[100];       // 558
@@ -254,9 +259,8 @@ struct SYSCFG {
   uint16_t      pulse_counter_debounce;    // 5D2
   uint8_t       rf_code[17][9];            // 5D4
 
-  byte          free_66d[1];               // 66D
+  byte          free_66d[3];               // 66D
 
-  int16_t       dst_offset;                // 66E
   Timer         timer[MAX_TIMERS];         // 670
   int           latitude;                  // 6B0
   int           longitude;                 // 6B4
diff --git a/sonoff/settings.ino b/sonoff/settings.ino
index 78a48e657..2d3f3c3d8 100644
--- a/sonoff/settings.ino
+++ b/sonoff/settings.ino
@@ -522,7 +522,7 @@ void SettingsDefaultSet2()
   Settings.latitude = (int)((double)LATITUDE * 1000000);
   Settings.longitude = (int)((double)LONGITUDE * 1000000);
 
-  SettingsDefaultSet_5_13_1a();
+  SettingsDefaultSet_5_13_1c();
 }
 
 /********************************************************************************************/
@@ -654,20 +654,30 @@ void SettingsDefaultSet_5_10_1()
   Settings.display_size = 1;
 }
 
-void SettingsDefaultSet_5_13_1a()
+void SettingsResetStd()
 {
-  Settings.dst_flags.hemis = TIME_DST_HEMISPHERE;
-  Settings.dst_flags.week = TIME_DST_WEEK;
-  Settings.dst_flags.dow = TIME_DST_DAY;
-  Settings.dst_flags.month = TIME_DST_MONTH;
-  Settings.dst_flags.hour = TIME_DST_HOUR;
-  Settings.dst_offset = TIME_DST_OFFSET;
-  Settings.std_flags.hemis = TIME_STD_HEMISPHERE;
-  Settings.std_flags.week = TIME_STD_WEEK;
-  Settings.std_flags.dow = TIME_STD_DAY;
-  Settings.std_flags.month = TIME_STD_MONTH;
-  Settings.std_flags.hour = TIME_STD_HOUR;
-  Settings.std_offset = TIME_STD_OFFSET;
+  Settings.tflag[0].hemis = TIME_STD_HEMISPHERE;
+  Settings.tflag[0].week = TIME_STD_WEEK;
+  Settings.tflag[0].dow = TIME_STD_DAY;
+  Settings.tflag[0].month = TIME_STD_MONTH;
+  Settings.tflag[0].hour = TIME_STD_HOUR;
+  Settings.toffset[0] = TIME_STD_OFFSET;
+}
+
+void SettingsResetDst()
+{
+  Settings.tflag[1].hemis = TIME_DST_HEMISPHERE;
+  Settings.tflag[1].week = TIME_DST_WEEK;
+  Settings.tflag[1].dow = TIME_DST_DAY;
+  Settings.tflag[1].month = TIME_DST_MONTH;
+  Settings.tflag[1].hour = TIME_DST_HOUR;
+  Settings.toffset[1] = TIME_DST_OFFSET;
+}
+
+void SettingsDefaultSet_5_13_1c()
+{
+  SettingsResetStd();
+  SettingsResetDst();
 }
 
 /********************************************************************************************/
@@ -874,8 +884,8 @@ void SettingsDelta()
       Settings.energy_kWhyesterday /= 1000;
       RtcSettings.energy_kWhtoday /= 1000;
     }
-    if (Settings.version < 0x050D0102) {
-      SettingsDefaultSet_5_13_1a();
+    if (Settings.version < 0x050D0103) {
+      SettingsDefaultSet_5_13_1c();
     }
 
     Settings.version = VERSION;
diff --git a/sonoff/sonoff.ino b/sonoff/sonoff.ino
index 858ff8579..7d41205b7 100644
--- a/sonoff/sonoff.ino
+++ b/sonoff/sonoff.ino
@@ -25,7 +25,7 @@
     - Select IDE Tools - Flash Size: "1M (no SPIFFS)"
   ====================================================*/
 
-#define VERSION                0x050D0102   // 5.13.1b
+#define VERSION                0x050D0103   // 5.13.1c
 
 // Location specific includes
 #include <core_version.h>                   // Arduino_Esp8266 version information (ARDUINO_ESP8266_RELEASE and ARDUINO_ESP8266_RELEASE_2_3_0)
@@ -83,7 +83,7 @@ enum TasmotaCommands {
   CMND_COUNTERDEBOUNCE, CMND_SLEEP, CMND_UPGRADE, CMND_UPLOAD, CMND_OTAURL, CMND_SERIALLOG, CMND_SYSLOG,
   CMND_LOGHOST, CMND_LOGPORT, CMND_IPADDRESS, CMND_NTPSERVER, CMND_AP, CMND_SSID, CMND_PASSWORD, CMND_HOSTNAME,
   CMND_WIFICONFIG, CMND_FRIENDLYNAME, CMND_SWITCHMODE, CMND_WEBSERVER, CMND_WEBPASSWORD, CMND_WEBLOG, CMND_EMULATION,
-  CMND_TELEPERIOD, CMND_RESTART, CMND_RESET, CMND_TIMEZONE, CMND_ALTITUDE, CMND_LEDPOWER, CMND_LEDSTATE,
+  CMND_TELEPERIOD, CMND_RESTART, CMND_RESET, CMND_TIMEZONE, CMND_TIMESTD, CMND_TIMEDST, CMND_ALTITUDE, CMND_LEDPOWER, CMND_LEDSTATE,
   CMND_I2CSCAN, CMND_SERIALSEND, CMND_BAUDRATE, CMND_SERIALDELIMITER };
 const char kTasmotaCommands[] PROGMEM =
   D_CMND_BACKLOG "|" D_CMND_DELAY "|" D_CMND_POWER "|" D_CMND_STATUS "|" D_CMND_STATE "|"  D_CMND_POWERONSTATE "|" D_CMND_PULSETIME "|"
@@ -93,7 +93,7 @@ const char kTasmotaCommands[] PROGMEM =
   D_CMND_COUNTERDEBOUNCE "|" D_CMND_SLEEP "|" D_CMND_UPGRADE "|" D_CMND_UPLOAD "|" D_CMND_OTAURL "|" D_CMND_SERIALLOG "|" D_CMND_SYSLOG "|"
   D_CMND_LOGHOST "|" D_CMND_LOGPORT "|" D_CMND_IPADDRESS "|" D_CMND_NTPSERVER "|" D_CMND_AP "|" D_CMND_SSID "|" D_CMND_PASSWORD "|" D_CMND_HOSTNAME "|"
   D_CMND_WIFICONFIG "|" D_CMND_FRIENDLYNAME "|" D_CMND_SWITCHMODE "|" D_CMND_WEBSERVER "|" D_CMND_WEBPASSWORD "|" D_CMND_WEBLOG "|" D_CMND_EMULATION "|"
-  D_CMND_TELEPERIOD "|" D_CMND_RESTART "|" D_CMND_RESET "|" D_CMND_TIMEZONE "|" D_CMND_ALTITUDE "|" D_CMND_LEDPOWER "|" D_CMND_LEDSTATE "|"
+  D_CMND_TELEPERIOD "|" D_CMND_RESTART "|" D_CMND_RESET "|" D_CMND_TIMEZONE "|" D_CMND_TIMESTD "|" D_CMND_TIMEDST "|" D_CMND_ALTITUDE "|" D_CMND_LEDPOWER "|" D_CMND_LEDSTATE "|"
   D_CMND_I2CSCAN "|" D_CMND_SERIALSEND "|" D_CMND_BAUDRATE "|" D_CMND_SERIALDELIMITER;
 
 // Global variables
@@ -177,6 +177,7 @@ uint8_t light_type = 0;                     // Light types
 bool pwm_present = false;                   // Any PWM channel configured with SetOption15 0
 boolean mdns_begun = false;
 unsigned long features = 0UL;
+uint8_t ntp_force_sync = 0;                 // Force NTP sync
 
 char my_version[33];                        // Composed version string
 char my_hostname[33];                       // Composed Wifi hostname
@@ -1046,6 +1047,40 @@ void MqttDataHandler(char* topic, byte* data, unsigned int data_len)
       if ((data_len > 0) && (((payload >= -13) && (payload <= 14)) || (99 == payload))) Settings.timezone = payload;
       snprintf_P(mqtt_data, sizeof(mqtt_data), S_JSON_COMMAND_NVALUE, command, Settings.timezone);
     }
+    else if ((CMND_TIMESTD == command_code) || (CMND_TIMEDST == command_code)) {
+      // TimeStd 0/1, 0/1/2/3/4, 1..12, 1..7, 0..23, +/-780
+      uint8_t ts = 0;
+      if (CMND_TIMEDST == command_code) { ts = 1; }
+      if (data_len > 0) {
+        if (strstr(dataBuf, ",")) {                        // Parameter entry
+          uint8_t tpos = 0;
+          int value = strtol(dataBuf, &p, 10);
+          while (p && (tpos < 7)) {
+            tpos++;
+            if (1 == tpos) { Settings.tflag[ts].hemis = value &1; }
+            if (2 == tpos) { Settings.tflag[ts].week = (value < 0) ? 0 : (value > 4) ? 4 : value; }
+            if (3 == tpos) { Settings.tflag[ts].month = (value < 1) ? 1 : (value > 12) ? 12 : value; }
+            if (4 == tpos) { Settings.tflag[ts].dow = (value < 1) ? 1 : (value > 7) ? 7 : value; }
+            if (5 == tpos) { Settings.tflag[ts].hour = (value < 0) ? 0 : (value > 23) ? 23 : value; }
+            if (6 == tpos) { Settings.toffset[ts] = (value < -900) ? -900 : (value > 900) ? 900 : value; }
+            p++;  // Skip comma
+            value = strtol(p, &p, 10);
+          }
+          ntp_force_sync = 1;
+        } else {
+          if (0 == payload) {
+            if (0 == ts) {
+              SettingsResetStd();
+            } else {
+              SettingsResetDst();
+            }
+          }
+          ntp_force_sync = 1;
+        }
+      }
+      snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("{\"%s\":{\"Hemisphere\":%d,\"Week\":%d,\"Month\":%d,\"Day\":%d,\"Hour\":%d,\"Offset\":%d\"}}"),
+        command, Settings.tflag[ts].hemis, Settings.tflag[ts].week, Settings.tflag[ts].month, Settings.tflag[ts].dow, Settings.tflag[ts].hour, Settings.toffset[ts]);
+    }
     else if (CMND_ALTITUDE == command_code) {
       if ((data_len > 0) && ((payload >= -30000) && (payload <= 30000))) Settings.altitude = payload;
       snprintf_P(mqtt_data, sizeof(mqtt_data), S_JSON_COMMAND_NVALUE, command, Settings.altitude);
diff --git a/sonoff/support.ino b/sonoff/support.ino
index 9564f83aa..10f347a9d 100644
--- a/sonoff/support.ino
+++ b/sonoff/support.ino
@@ -1357,9 +1357,10 @@ void RtcSecond()
 
   if ((ntp_sync_minute > 59) && (RtcTime.minute > 2)) ntp_sync_minute = 1;                 // If sync prepare for a new cycle
   uint8_t offset = (uptime < 30) ? RtcTime.second : (((ESP.getChipId() & 0xF) * 3) + 3) ;  // First try ASAP to sync. If fails try once every 60 seconds based on chip id
-  if ((WL_CONNECTED == WiFi.status()) && (offset == RtcTime.second) && ((RtcTime.year < 2016) || (ntp_sync_minute == RtcTime.minute))) {
+  if ((WL_CONNECTED == WiFi.status()) && (offset == RtcTime.second) && ((RtcTime.year < 2016) || (ntp_sync_minute == RtcTime.minute) || ntp_force_sync)) {
     ntp_time = sntp_get_current_timestamp();
     if (ntp_time > 1451602800) {  // Fix NTP bug in core 2.4.1/SDK 2.2.1 (returns Thu Jan 01 08:00:10 1970 after power on)
+      ntp_force_sync = 0;
       utc_time = ntp_time;
       ntp_sync_minute = 60;  // Sync so block further requests
       if (restart_time == 0) {
@@ -1367,8 +1368,8 @@ void RtcSecond()
       }
       BreakTime(utc_time, tmpTime);
       RtcTime.year = tmpTime.year + 1970;
-      daylight_saving_time = RuleToTime(Settings.dst_flags, RtcTime.year);
-      standard_time = RuleToTime(Settings.std_flags, RtcTime.year);
+      daylight_saving_time = RuleToTime(Settings.tflag[1], RtcTime.year);
+      standard_time = RuleToTime(Settings.tflag[0], RtcTime.year);
       snprintf_P(log_data, sizeof(log_data), PSTR(D_LOG_APPLICATION "(" D_UTC_TIME ") %s, (" D_DST_TIME ") %s, (" D_STD_TIME ") %s"),
         GetTime(0).c_str(), GetTime(2).c_str(), GetTime(3).c_str());
       AddLog(LOG_LEVEL_DEBUG);
@@ -1389,9 +1390,9 @@ void RtcSecond()
   if (local_time > 1451602800) {  // 2016-01-01
     int32_t time_offset = Settings.timezone * SECS_PER_HOUR;
     if (99 == Settings.timezone) {
-      dstoffset = Settings.dst_offset * SECS_PER_MIN;
-      stdoffset = Settings.std_offset * SECS_PER_MIN;
-      if (Settings.dst_flags.hemis) {
+      dstoffset = Settings.toffset[1] * SECS_PER_MIN;
+      stdoffset = Settings.toffset[0] * SECS_PER_MIN;
+      if (Settings.tflag[1].hemis) {
         // Southern hemisphere
         if ((utc_time >= (standard_time - dstoffset)) && (utc_time < (daylight_saving_time - stdoffset))) {
           time_offset = stdoffset;  // Standard Time
diff --git a/sonoff/xsns_23_sdm120.ino b/sonoff/xsns_23_sdm120.ino
index 69baa35e5..c34e2ed7c 100644
--- a/sonoff/xsns_23_sdm120.ino
+++ b/sonoff/xsns_23_sdm120.ino
@@ -34,7 +34,9 @@ uint8_t sdm120_state = 0;
 
 float sdm120_voltage = 0;
 float sdm120_current = 0;
-float sdm120_power = 0;
+float sdm120_active_power = 0;
+float sdm120_apparent_power = 0;
+float sdm120_reactive_power = 0;
 float sdm120_power_factor = 0;
 float sdm120_frequency = 0;
 float sdm120_energy_total = 0;
@@ -123,8 +125,8 @@ const uint16_t sdm_start_addresses[] {
   0x0000,   // SDM120C_VOLTAGE  [V]
   0x0006,   // SDM120C_CURRENT  [A]
   0x000C,   // SDM120C_POWER    [W]
-  0x0012,   // SDM120C_ACTIVE_APPARENT_POWER  [VA]
-  0x0018,   // SDM120C_REACTIVE_APPARENT_POWER  [VAR]
+  0x0012,   // SDM120C_APPARENT_POWER  [VA]
+  0x0018,   // SDM120C_REACTIVE_POWER  [VAR]
   0x001E,   // SDM120C_POWER_FACTOR
   0x0046,   // SDM120C_FREQUENCY  [Hz]
   0x0048,   // SDM120C_IMPORT_ACTIVE_ENERGY [Wh]
@@ -160,7 +162,15 @@ void SDM12050ms()              // Every 50 mSec
             break;
 
           case 2:
-            sdm120_power = value;
+            sdm120_active_power = value;
+            break;
+
+          case 3:
+            sdm120_apparent_power = value;
+            break;
+
+          case 4:
+            sdm120_reactive_power = value;
             break;
 
           case 5:
@@ -198,7 +208,11 @@ void SDM120Init()
   sdm120_type = 0;
   if ((pin[GPIO_SDM120_RX] < 99) && (pin[GPIO_SDM120_TX] < 99)) {
     SDM120Serial = new TasmotaSerial(pin[GPIO_SDM120_RX], pin[GPIO_SDM120_TX], 1);
-    if (SDM120Serial->begin(9600)) {
+#ifdef SDM120_SPEED
+    if (SDM120Serial->begin(SDM120_SPEED)) {
+#else
+    if (SDM120Serial->begin(2400)) {
+#endif
       if (SDM120Serial->hardwareSerial()) { ClaimSerial(); }
       sdm120_type = 1;
     }
@@ -209,7 +223,9 @@ void SDM120Init()
 const char HTTP_SNS_SDM120_DATA[] PROGMEM = "%s"
   "{s}SDM120 " D_VOLTAGE "{m}%s " D_UNIT_VOLT "{e}"
   "{s}SDM120 " D_CURRENT "{m}%s " D_UNIT_AMPERE "{e}"
-  "{s}SDM120 " D_POWERUSAGE "{m}%s " D_UNIT_WATT "{e}"
+  "{s}SDM120 " D_POWERUSAGE_ACTIVE "{m}%s " D_UNIT_WATT "{e}"
+  "{s}SDM120 " D_POWERUSAGE_APPARENT "{m}%s " D_UNIT_VA "{e}"
+  "{s}SDM120 " D_POWERUSAGE_REACTIVE "{m}%s " D_UNIT_VAR "{e}"
   "{s}SDM120 " D_POWER_FACTOR "{m}%s{e}"
   "{s}SDM120 " D_FREQUENCY "{m}%s " D_UNIT_HERTZ "{e}"
   "{s}SDM120 " D_ENERGY_TOTAL "{m}%s " D_UNIT_KILOWATTHOUR "{e}";
@@ -219,31 +235,35 @@ void SDM120Show(boolean json)
 {
   char voltage[10];
   char current[10];
-  char power[10];
+  char active_power[10];
+  char apparent_power[10];
+  char reactive_power[10];
   char power_factor[10];
   char frequency[10];
   char energy_total[10];
 
   dtostrfd(sdm120_voltage, Settings.flag2.voltage_resolution, voltage);
   dtostrfd(sdm120_current, Settings.flag2.current_resolution, current);
-  dtostrfd(sdm120_power, Settings.flag2.wattage_resolution, power);
+  dtostrfd(sdm120_active_power, Settings.flag2.wattage_resolution, active_power);
+  dtostrfd(sdm120_apparent_power, Settings.flag2.wattage_resolution, apparent_power);
+  dtostrfd(sdm120_reactive_power, Settings.flag2.wattage_resolution, reactive_power);
   dtostrfd(sdm120_power_factor, 2, power_factor);
   dtostrfd(sdm120_frequency, 2, frequency);
   dtostrfd(sdm120_energy_total, Settings.flag2.energy_resolution, energy_total);
 
   if (json) {
-    snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"" D_RSLT_ENERGY "\":{\"" D_JSON_TOTAL "\":%s,\"" D_JSON_POWERUSAGE "\":%s,\"" D_JSON_FREQUENCY "\":%s,\"" D_JSON_POWERFACTOR "\":%s,\"" D_JSON_VOLTAGE "\":%s,\"" D_JSON_CURRENT "\":%s}"),
-      mqtt_data, energy_total, power, frequency, power_factor, voltage, current);
+    snprintf_P(mqtt_data, sizeof(mqtt_data), PSTR("%s,\"" D_RSLT_ENERGY "\":{\"" D_JSON_TOTAL "\":%s,\"" D_JSON_ACTIVE_POWERUSAGE "\":%s,\"" D_JSON_APPARENT_POWERUSAGE "\":%s,\"" D_JSON_REACTIVE_POWERUSAGE "\":%s,\"" D_JSON_FREQUENCY "\":%s,\"" D_JSON_POWERFACTOR "\":%s,\"" D_JSON_VOLTAGE "\":%s,\"" D_JSON_CURRENT "\":%s}"),
+      mqtt_data, energy_total, active_power, apparent_power, reactive_power, frequency, power_factor, voltage, current);
 #ifdef USE_DOMOTICZ
     if (0 == tele_period) { 
       DomoticzSensor(DZ_VOLTAGE, voltage);
       DomoticzSensor(DZ_CURRENT, current);
-      DomoticzSensorPowerEnergy((uint16_t)sdm120_power, energy_total); 
+      DomoticzSensorPowerEnergy((uint16_t)sdm120_active_power, energy_total); 
     }
 #endif  // USE_DOMOTICZ
 #ifdef USE_WEBSERVER
   } else {
-    snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_SNS_SDM120_DATA, mqtt_data, voltage, current, power, power_factor, frequency, energy_total);
+    snprintf_P(mqtt_data, sizeof(mqtt_data), HTTP_SNS_SDM120_DATA, mqtt_data, voltage, current, active_power, apparent_power, reactive_power, power_factor, frequency, energy_total);
   }
 #endif  // USE_WEBSERVER
 }
@@ -280,3 +300,4 @@ boolean Xsns23(byte function)
 }
 
 #endif   // USE_SDM120
+