diff --git a/src/ConfigClass.h b/include/ConfigClass.h
similarity index 100%
rename from src/ConfigClass.h
rename to include/ConfigClass.h
diff --git a/include/network/time_client.h b/include/network/time_client.h
new file mode 100644
index 0000000..8d02ac3
--- /dev/null
+++ b/include/network/time_client.h
@@ -0,0 +1,7 @@
+#include <Arduino.h>
+
+void ntp_setup();
+String getFormattedTime();
+
+/** time is not set due to NTP failed or NTP disabled */
+const String TIME_NOT_READY = "0000/00/00 00:00:00";
\ No newline at end of file
diff --git a/platformio.ini b/platformio.ini
index 63d2ddd..03cdfb8 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -10,14 +10,15 @@
 
 [platformio]
 description = "EnvBoyX"
-default_envs = esp32dev
+#default_envs = esp32dev
+default_envs = esp12e
 
 [env]
 extra_scripts =
 	pre:build_script/create_embed.py
 
 [env:esp32dev]
-platform = https://github.com/platformio/platform-espressif32.git
+platform = espressif32
 board = esp32dev
 framework = arduino
 board_build.mcu = esp32
diff --git a/src/ConfigClass_defaultValue.cpp b/src/ConfigClass_defaultValue.cpp
index df07a9a..8207925 100644
--- a/src/ConfigClass_defaultValue.cpp
+++ b/src/ConfigClass_defaultValue.cpp
@@ -22,7 +22,7 @@ void Config::loadDefaultValue() {
 
   this->addConfig(ConfigNames::DISPLAY_FLIP, ConfigValues::DISPLAY_FLIP_OFF);
   this->addConfig(ConfigNames::DISPLAY_BRIGHTNESS, "255");
-  this->addConfig(ConfigNames::DISPLAY_RECONFIG, ConfigValues::DISPLAY_RECONFIG_ON);  // v44;
+  this->addConfig(ConfigNames::DISPLAY_RECONFIG, ConfigValues::DISPLAY_RECONFIG_SKIP);  // v44: 追加(ON) v47: デフォルトOFF
   this->addConfig(ConfigNames::DISPLAY_AUTODIM_LUX, "5");       // v45: この明るさ以下がDuration秒続けば消灯
   this->addConfig(ConfigNames::DISPLAY_AUTODIM_WAIT_SEC, "10"); // v45: 消灯までの時間 second
 
diff --git a/src/config_names.cpp b/src/config_names.cpp
index c04dda8..20f544a 100644
--- a/src/config_names.cpp
+++ b/src/config_names.cpp
@@ -9,6 +9,8 @@ const String ConfigNames::OPMODE = "opMode";
 
 const String ConfigNames::DISPLAY_FLIP = "displayFlip";
 const String ConfigNames::DISPLAY_BRIGHTNESS = "displayBrightness";
+
+/** Show and wait for reconfig screen on boot */
 const String ConfigNames::DISPLAY_RECONFIG = "displayWaitForReconfigure";
 
 const String ConfigNames::DISPLAY_AUTODIM_LUX = "displayAutoDimLux"; // v45
diff --git a/src/main_normal.cpp b/src/main_normal.cpp
index 3a88001..6ba4471 100644
--- a/src/main_normal.cpp
+++ b/src/main_normal.cpp
@@ -26,6 +26,7 @@
 #include "sensors/stastics.h"
 #include "watchdog.h"
 #include "wifiutil.h"
+#include "network/time_client.h"
 
 WiFiClient net;
 
@@ -170,6 +171,8 @@ void setup_normal() {
   mainlog("TimerCall version: " + String(timer.VERSION, 2));
   init_sensors();
 
+  ntp_setup();
+
   // TimerCall
   add_timer_tasks();
   timer.forceRunStasticsOnce();
diff --git a/src/network/time_client.cpp b/src/network/time_client.cpp
new file mode 100644
index 0000000..660c254
--- /dev/null
+++ b/src/network/time_client.cpp
@@ -0,0 +1,54 @@
+#include <Arduino.h>
+
+#ifdef esp32
+#include <esp_sntp.h>
+
+#endif
+#ifdef ESP8266
+#include <time.h>
+#endif
+
+#include "log.h"
+#include "network/time_client.h"
+
+void ntp_setup() {
+
+  cfglog("Communicating NTP server.");
+
+  configTzTime("JST-9", "10.1.0.10");
+
+  cfglog("Communicating NTP server done.");
+}
+
+#ifdef esp32
+struct tm timeinfo;
+
+String getFormattedTime() {
+  if (!getLocalTime(&timeinfo, 1)) {
+    return TIME_NOT_READY;
+  }
+
+  char buf[64];
+  strftime(buf, 64, "%Y/%m/%d %H:%M:%S", &timeinfo);
+  // String s = fmt.Sprintf(&timeinfo, "%A, %B %d %Y %H:%M:%S");
+  return String(buf);
+}
+#endif
+#ifdef ESP8266
+time_t t;
+struct tm *tm;
+
+String getFormattedTime() {
+
+  char buf[50];
+
+  t = time(NULL);
+  tm = localtime(&t);
+
+  sprintf(buf, " %04d/%02d/%02d %02d:%02d:%02d",
+          tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+          tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+  return String(buf);
+}
+#endif
diff --git a/src/sensors/stastics.cpp b/src/sensors/stastics.cpp
index fceeb8a..0d3cb41 100644
--- a/src/sensors/stastics.cpp
+++ b/src/sensors/stastics.cpp
@@ -5,11 +5,15 @@
 #include "log.h"
 #include "TimerCall.h"
 
+#include "network/time_client.h"
+
 // 統計情報を取得
 void updateStastics(std::vector<TimerCall::TimerCallTask> &tasks) {
   const String STAT = "stastics";
 
   DynamicJsonDocument doc(500);
+  String datetime = getFormattedTime();
+  doc["datetime"] = datetime;
   doc["time"] = millis();
 
   int idx = 0;
@@ -30,19 +34,20 @@ void updateStastics(std::vector<TimerCall::TimerCallTask> &tasks) {
   }
 
   String logmsg = "";
-  if (DEBUG_BUILD) logmsg += "**DEBUG BUILD** ";
 
-  logmsg += "Statstics:";
 #ifdef ESP32
   doc["cputemp"] = temperatureRead();  // CPU温度
-  logmsg += " ESP32: cpuTemp=" + String(temperatureRead());
+  logmsg += "ESP32: cpuTemp=" + String(temperatureRead());
   logmsg += " freeHeap=" + String(ESP.getFreeHeap());
 #endif
 
 #ifdef ESP8266
-  logmsg += " ESP8266: freeHeap=" + String(ESP.getFreeHeap());
+  logmsg += "ESP8266: freeHeap=" + String(ESP.getFreeHeap());
 #endif
 
+  logmsg += " datetime=" + datetime;
+  if (DEBUG_BUILD) logmsg += " **DEBUG BUILD** ";
+
   statlog(logmsg); // これくらいは出しておかないと動いてるのかわからなくなるので出す
 
   String json = "";
diff --git a/src/utils/log.cpp b/src/utils/log.cpp
index 00d46e3..83afb52 100644
--- a/src/utils/log.cpp
+++ b/src/utils/log.cpp
@@ -1,4 +1,5 @@
 #include <Arduino.h>
+#include "network/time_client.h"
 
 void real_log(String msgString, String prefixString) {
   char log[130];
@@ -6,7 +7,14 @@ void real_log(String msgString, String prefixString) {
   char msg[100];
   prefixString.toCharArray(prefix, sizeof prefix);
   msgString.toCharArray(msg, sizeof msg);
-  snprintf(log, sizeof log, "%08lu %-10s: %s", millis(),  prefix, msg);
+
+  String datetime = getFormattedTime();
+
+  if (datetime != TIME_NOT_READY) {
+    snprintf(log, sizeof log, "%s %08lu %-10s: %s", datetime, millis(),  prefix, msg);
+  } else {
+    snprintf(log, sizeof log, "%08lu %-10s: %s", millis(),  prefix, msg);
+  }
   Serial.println(log);
 }