diff --git a/README.md b/README.md
index aec2ecc..ce6ede1 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,9 @@ https://aliexpress.com/item/4000699838567.html
 https://www.aliexpress.com/item/33009687492.html
 - Touchscreen https://aliexpress.com/item/33048191074.html
 
+##### RTC
+- DS1307 or DS3231 https://aliexpress.com/item/4001130860369.html
+
 ---
 ## Connection tables
 ##### Use [this tool](https://e2002.github.io/docs/myoptions-generator.html) to build your own connection table and myoptions.h file.
@@ -89,7 +92,7 @@ https://e2002.github.io/docs/myoptions-generator.html
 ---
 ## Dependencies
 #### Libraries:
-**Library Manager**: Adafruit_GFX, Adafruit_ST7735\*, Adafruit_SSD1306\*, Adafruit_PCD8544\*, Adafruit_SH110X\*, Adafruit_SSD1327\*, Adafruit_ILI9341\*, Adafruit_SSD1305\*, TFT_22_ILI9225\* (\* depending on display model), OneButton, IRremoteESP8266, XPT2046_Touchscreen \
+**Library Manager**: Adafruit_GFX, Adafruit_ST7735\*, Adafruit_SSD1306\*, Adafruit_PCD8544\*, Adafruit_SH110X\*, Adafruit_SSD1327\*, Adafruit_ILI9341\*, Adafruit_SSD1305\*, TFT_22_ILI9225\* (\* depending on display model), OneButton, IRremoteESP8266, XPT2046_Touchscreen, RTCLib \
 **Github**: ~~[ESPAsyncWebServer](https://github.com/me-no-dev/ESPAsyncWebServer), [AsyncTCP](https://github.com/me-no-dev/AsyncTCP), [async-mqtt-client](https://github.com/marvinroger/async-mqtt-client) (if you need MQTT support)~~ <<< **starting with version 0.8.920, these libraries have been moved into the project, and there is no need to install them additionally.**
 
 #### Tool:
@@ -226,6 +229,15 @@ Work is in progress...
 
 ---
 ## Version history
+#### v0.9.250
+- added support for DS1307 or DS3231 RTC module (you need to install the RTCLib library in the library manager)
+- setup
+```
+#define RTC_MODULE	DS3231	/* or DS1307	*/
+#define RTC_SDA       <pin>
+#define RTC_SCL       <pin>
+```
+
 #### v0.9.242
 - fixed a hang bug when scrolling through an SD playlist with an encoder in configurations with VS1053B
 - fixed a hang bug when quickly switching SD / WEB modes from the WEB interface in configurations with VS1053B
diff --git a/yoRadio/src/core/config.cpp b/yoRadio/src/core/config.cpp
index 7e2feb3..7447d90 100644
--- a/yoRadio/src/core/config.cpp
+++ b/yoRadio/src/core/config.cpp
@@ -34,6 +34,17 @@ bool Config::_isFSempty() {
 void Config::init() {
   EEPROM.begin(EEPROM_SIZE);
   sdog.begin();
+  bootInfo();
+#if RTCSUPPORTED
+	_rtcFound = false;
+	BOOTLOG("RTC begin(SDA=%d,SCL=%d)", RTC_SDA, RTC_SCL);
+	if(rtc.init()){
+		BOOTLOG("done");
+		_rtcFound = true;
+	}else{
+		BOOTLOG("[ERROR] - Couldn't find RTC");
+	}
+#endif
   emptyFS = true;
 #if IR_PIN!=255
     irindex=-1;
@@ -69,7 +80,7 @@ void Config::init() {
   backupSDStation = 0;
   //checkSD();
   _bootDone=false;
-  bootInfo();
+  //bootInfo();
 }
 
 #ifdef USE_SD
diff --git a/yoRadio/src/core/config.h b/yoRadio/src/core/config.h
index dce2655..32ad4da 100644
--- a/yoRadio/src/core/config.h
+++ b/yoRadio/src/core/config.h
@@ -6,6 +6,7 @@
 #include <SPIFFS.h>
 #include "SD.h"
 #include "options.h"
+#include "rtcsupport.h"
 
 #define EEPROM_SIZE       768
 #define EEPROM_START      500
@@ -220,11 +221,17 @@ class Config {
     void clearCardStatus() { if(_cardStatus!=CS_NONE) _cardStatus=CS_NONE; }
     bool spiffsCleanup();
     FS* SDPLFS(){ return _SDplaylistFS; }
+    #if RTCSUPPORTED
+    	bool isRTCFound(){ return _rtcFound; };
+    #endif
   private:
     template <class T> int eepromWrite(int ee, const T& value);
     template <class T> int eepromRead(int ee, T& value);
     cardStatus_e _cardStatus;
     bool _bootDone;
+    #if RTCSUPPORTED
+    	bool _rtcFound;
+    #endif
     FS* _SDplaylistFS;
     void setDefaults();
     Ticker   _sleepTimer;
diff --git a/yoRadio/src/core/network.cpp b/yoRadio/src/core/network.cpp
index 90ede32..925cfea 100644
--- a/yoRadio/src/core/network.cpp
+++ b/yoRadio/src/core/network.cpp
@@ -18,8 +18,13 @@ void ticks() {
   
   static const uint16_t weatherSyncInterval=1800;
   //static const uint16_t weatherSyncIntervalFail=10;
-  static const uint16_t timeSyncInterval=3600;
-  static uint16_t timeSyncTicks = 0;
+#if RTCSUPPORTED
+  static const uint32_t timeSyncInterval=86400;
+  static uint32_t timeSyncTicks = 0;
+#else
+	static const uint16_t timeSyncInterval=3600;
+	static uint16_t timeSyncTicks = 0;
+#endif
   static uint16_t weatherSyncTicks = 0;
   static bool divrssi;
   timeSyncTicks++;
@@ -36,12 +41,17 @@ void ticks() {
     weatherSyncTicks=0;
     network.forceWeather = true;
   }
-  
-  if(network.timeinfo.tm_year>100) {
+#if RTCSUPPORTED
+	rtc.getTime(&network.timeinfo);
+	mktime(&network.timeinfo);
+  display.putRequest(CLOCK);
+#else
+  if(network.timeinfo.tm_year>100 || network.status == SDREADY) {
     network.timeinfo.tm_sec++;
     mktime(&network.timeinfo);
     display.putRequest(CLOCK);
   }
+#endif
   if(player.isRunning() && config.getMode()==PM_SDCARD) netserver.requestOnChange(SDPOS, 0);
   if(divrssi) {
     netserver.setRSSI(WiFi.RSSI());
@@ -137,6 +147,11 @@ void Network::begin() {
   }else if(strlen(config.store.sntp1)>0){
     configTime(config.store.tzHour * 3600 + config.store.tzMin * 60, config.getTimezoneOffset(), config.store.sntp1);
   }
+#if RTCSUPPORTED
+	rtc.getTime(&network.timeinfo);
+	mktime(&network.timeinfo);
+  display.putRequest(CLOCK);
+#endif
   ctimer.attach(1, ticks);
   if (network_on_connect) network_on_connect();
 }
@@ -187,6 +202,9 @@ void doSync( void * pvParameters ) {
       mktime(&network.timeinfo);
       display.putRequest(CLOCK);
       network.requestTimeSync(true);
+      #if RTCSUPPORTED
+      	if (config.isRTCFound()) rtc.setTime(&network.timeinfo);
+      #endif
     }else{
       if(tsFailCnt<4){
         network.forceTimeSync = true;
diff --git a/yoRadio/src/core/network.h b/yoRadio/src/core/network.h
index 7692c34..8e094c5 100644
--- a/yoRadio/src/core/network.h
+++ b/yoRadio/src/core/network.h
@@ -3,6 +3,7 @@
 #include <Ticker.h>
 #include "time.h"
 #include "WiFi.h"
+#include "rtcsupport.h"
 
 #define apSsid      "yoRadioAP"
 #define apPassword  "12345987"
@@ -10,7 +11,7 @@
 #define TSYNC_DELAY       3600000     // 1000*60*60   = 1 hour
 #define WEATHER_STRING_L  254
 
-enum n_Status_e { CONNECTED, SOFT_AP, FAILED };
+enum n_Status_e { CONNECTED, SOFT_AP, FAILED, SDREADY };
 
 class Network {
   public:
diff --git a/yoRadio/src/core/options.h b/yoRadio/src/core/options.h
index 0bf6dde..a75b5d6 100644
--- a/yoRadio/src/core/options.h
+++ b/yoRadio/src/core/options.h
@@ -1,7 +1,7 @@
 #ifndef options_h
 #define options_h
 
-#define YOVERSION "0.9.242"
+#define YOVERSION "0.9.250"
 
 /*******************************************************
 DO NOT EDIT THIS FILE. 
@@ -121,9 +121,6 @@ The connection tables are located here https://github.com/e2002/yoradio#connecti
 #endif
 
 /*        SDCARD                  */
-#ifndef SDC_SPI
-  #define SDC_SPI       18, 19, 23  // SDCARD SPI pins (SCK, MISO, MOSI)
-#endif
 #ifndef SDC_CS
   #define SDC_CS        255  // SDCARD CS pin
 #endif
@@ -245,6 +242,21 @@ The connection tables are located here https://github.com/e2002/yoradio#connecti
   #define LCD_D7                255
 #endif
 
+/*        RTC                     */
+#define RTC_MODULE_UNDEFINED    0
+#define DS3231      						1
+#define DS1307        					2
+
+#ifndef RTC_MODULE
+  #define RTC_MODULE            RTC_MODULE_UNDEFINED	/*	DS3231 or DS1307	*/
+#endif
+#ifndef RTC_SDA
+  #define RTC_SDA               255
+#endif
+#ifndef RTC_SCL
+  #define RTC_SCL               255
+#endif
+
 /*        ESP DEVBOARD            */
 #ifndef LED_BUILTIN
   #define LED_BUILTIN   255
diff --git a/yoRadio/src/core/rtcsupport.cpp b/yoRadio/src/core/rtcsupport.cpp
new file mode 100644
index 0000000..ecb6970
--- /dev/null
+++ b/yoRadio/src/core/rtcsupport.cpp
@@ -0,0 +1,43 @@
+#include "rtcsupport.h"
+
+#if RTCSUPPORTED
+#include <Wire.h>
+
+TwoWire RTCWire = TwoWire(0);
+  
+RTC rtc;
+
+bool RTC::init(){
+	RTCWire.begin(RTC_SDA, RTC_SCL);
+	return begin(&RTCWire);
+}
+
+bool RTC::isRunning(){
+#if RTC_MODULE==DS3231
+	return !lostPower();
+#elif RTC_MODULE==DS1307
+	return isrunning();
+#endif
+}
+
+void RTC::getTime(struct tm* tinfo){
+	if(isRunning()){
+		DateTime nowTm = now();
+		tinfo->tm_sec  = nowTm.second();
+		tinfo->tm_min  = nowTm.minute();
+		tinfo->tm_hour = nowTm.hour();
+		tinfo->tm_wday = nowTm.dayOfTheWeek();
+		tinfo->tm_mday = nowTm.day();
+		tinfo->tm_mon  = nowTm.month() - 1;
+		tinfo->tm_year = nowTm.year() - 1900;
+	}else{
+		tinfo->tm_sec++;
+		mktime(tinfo);
+	}
+}
+
+void RTC::setTime(struct tm* tinfo){
+	adjust(DateTime(tinfo->tm_year + 1900, tinfo->tm_mon + 1, tinfo->tm_mday, tinfo->tm_hour, tinfo->tm_min, tinfo->tm_sec));
+}
+
+#endif
diff --git a/yoRadio/src/core/rtcsupport.h b/yoRadio/src/core/rtcsupport.h
new file mode 100644
index 0000000..89e6a8c
--- /dev/null
+++ b/yoRadio/src/core/rtcsupport.h
@@ -0,0 +1,26 @@
+#ifndef rtcsupport_h
+#define rtcsupport_h
+#include "options.h"
+
+#define RTCSUPPORTED	(RTC_SDA!=255 && RTC_SCL!=255 && (RTC_MODULE==DS3231 || RTC_MODULE==DS1307))
+
+#if RTCSUPPORTED
+#include "RTClib.h"
+
+#if RTC_MODULE==DS3231
+	class RTC: public RTC_DS3231 {
+#elif RTC_MODULE==DS1307
+	class RTC: public RTC_DS1307 {
+#else
+	#  error ONLY DS3231 OR DS1307 MODULE SUPPORTED
+#endif
+	public:
+		bool init();
+		bool isRunning();
+		void getTime(struct tm* tinfo);
+		void setTime(struct tm* tinfo);
+	};
+extern RTC rtc;
+#endif
+
+#endif