diff --git a/ntp.ino b/ntp.ino
new file mode 100644
index 0000000..4e0984f
--- /dev/null
+++ b/ntp.ino
@@ -0,0 +1,68 @@
+void ntpsetup() {
+    char* ntpserver = "ntp.nict.jp"; // 学内のNetworkを利用するときは、10.64.7.184 にする
+    //char* ntpserver = "192.168.11.11"; // 学内のNetworkを利用するときは、10.64.7.184 にする
+    configTime(9 * 3600, 0, ntpserver);//GMTとの時差(秒) が9*3600, サマータイムで進める時間(秒)が0
+
+    struct tm localTime;
+    getLocalTime(&localTime);
+    int ntpy=localTime.tm_year + 1900;
+    int ntpmon=localTime.tm_mon + 1;
+    int ntpday=localTime.tm_mday;
+    int ntphour=localTime.tm_hour;
+    int ntpmin=localTime.tm_min;
+    int ntpsec=localTime.tm_sec;
+    nowy=ntpy;
+    nowmon=ntpmon;
+    nowd=ntpday;
+    nows=ntpsec;
+    nowh=ntphour;
+    nowm=ntpmin;
+    sprintf(timenow, "%04d/%02d/%02d\n  %02d:%02d:%02d",
+    //sprintf(timenow, "%04d/%02d/%02d  %02d:%02d",
+        ntpy,
+        ntpmon,
+        ntpday,
+        ntphour,
+        ntpmin
+        ,ntpsec
+    );
+    //Serial.println(timenow);
+}
+
+void ntpget(){
+    //time change
+    if(systime-millis()/1000>=1){
+        nows++;
+    }
+    if(nows>=60){
+        nows=0;
+        nowm++;
+        if(nowm>=60){
+        nowh++;
+        nowm=0;
+        }
+        if(nowh>=24){
+        ntpsetup();
+        systime=millis()/1000;
+        }
+    }
+    sprintf(timenow, "%04d/%02d/%02d\n  %02d:%02d:%02d",
+    //sprintf(timenow, "%04d/%02d/%02d  %02d:%02d",
+        nowy,
+        nowmon,
+        nowd,
+        nowh,
+        nowm
+        ,nows
+    );
+
+    //For weather api
+    if(nowm!=setm){
+      reg=0;
+    }
+    //reget ntp
+    if(millis()/1000-systime>=ntptime*60){
+      ntpsetup();
+      systime=millis()/1000;
+    }
+}
\ No newline at end of file