#include <WiFi.h>

const char* ssid = "**********";
const char* password = "**********";

void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) { // 接続中...
    Serial.print(".");
  }
  char* ntpserver = "10.64.7.184"; // 学外なら、たとえば "ntp.nict.jp"
  configTime(9 * 3600, 0, ntpserver);//GMTとの時差(秒), サマータイムで進める時間(秒)
}

void loop() {
  struct tm localTime;
  char buf[30];
  getLocalTime(&localTime);
  sprintf(buf, ">> %04d/%02d/%02d  %02d:%02d:%02d",
          localTime.tm_year + 1900,
          localTime.tm_mon + 1,
          localTime.tm_mday,
          localTime.tm_hour,
          localTime.tm_min,
          localTime.tm_sec
         );
  Serial.println(buf);
  delay(1000);
}