@Blog

function lt2et(date) {
  // UNIX時間（秒）を取得
  const ut = date.getTime() / 1000;

  // エオルゼア時間1/1/1 00:00:00から経過した秒数
  const et_seconds = (ut * 60.0) / 175.0;

  // 各エオルゼア単位を計算
  const et_hours = ut / 175.0;
  const et_days = et_hours / 24.0;
  const et_months = et_days / 32.0;

  const et_year = et_months / 12.0 + 1.0;
  const et_month = (et_months % 12.0) + 1.0;
  const et_date = (et_days % 32.0) + 1.0;
  const et_hour = et_hours % 24.0;
  const et_minute = et_seconds % 60.0;

  return {
    year: Math.floor(et_year),
    month: Math.floor(et_month),
    date: Math.floor(et_date),
    hour: Math.floor(et_hour),
    minute: Math.floor(et_minute),
  };
}
setInterval(() => {
  let date;

  date = new Date(); // 現在時刻

  const et = lt2et(date);

  // 出力（例: 0001-01-01 00:00）
  document.getElementById("output").textContent = `
  ${et.month.toString().padStart(2, "0")}-${et.date
    .toString()
    .padStart(2, "0")} ${et.hour.toString().padStart(2, "0")}:${et.minute
    .toString()
    .padStart(2, "0")}
`;
}, 0);

<div class="clock">
    <div class="hand hour-hand"></div>
    <div class="hand minute-hand"></div>
    <div class="hand second-hand"></div>
    <div class="center-clock"></div>
</div>

.clock {
  /* width: 200px;
  height: 200px;
  border: 2px solid rgb(226, 226, 226); */
  border-radius: 50%;
}

.hand {
  position: absolute;
  bottom: 50%;
  left: 50%;
  transform-origin: bottom;
  background: #333!important;
}

.hour-hand {
  width: 4px;
  height: 60px;
  background: #333!important;;
}

.minute-hand {
  width: 3px;
  height: 80px;
  background: #666!important;;
}

.second-hand {
  width: 2px;
  height: 90px;
  background: rgb(94, 93, 93)!important;;
}

.center-clock {
  width: 10px;
  height: 10px;
  background: rgb(95, 95, 95)!important;;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 4;
}

        function updateClock() {
            const now = new Date();
            const hours = now.getHours();
            const minutes = now.getMinutes();
            const seconds = now.getSeconds();

            // 角度の計算
            const hourDeg = (hours % 12 + minutes / 60) * 30; // 12時間で360度
            const minuteDeg = (minutes + seconds / 60) * 6; // 60分で360度
            const secondDeg = seconds * 6; // 60秒で360度

            // 針の回転
            document.querySelector('.hour-hand').style.transform = `translateX(-50%) rotate(${hourDeg}deg)`;
            document.querySelector('.minute-hand').style.transform = `translateX(-50%) rotate(${minuteDeg}deg)`;
            document.querySelector('.second-hand').style.transform = `translateX(-50%) rotate(${secondDeg}deg)`;
        }

        // 初回実行
        updateClock();
        // 1秒ごとに更新
        setInterval(updateClock, 1000);

let kwh =  document.querySelectorAll(".img_area > table > tbody > tr > td");
if(kwh){let s = 0;
    for(let i = 0;i < kwh.length ; i++){
        if(kwh[i].innerText.match(/(kWh)/)){
          s = s + (Number(String(kwh[i].innerText).replace("kWh",""))*100);
          console.log(kwh[i].innerText);
        }
    }
    let r = 0;
    s = Math.floor(s /100);
    if(s >11){
        if(s < 120){
            r = ((s -11) * 20) + 411;
        }
        if(s < 300){
            r = ((s - 120) * 27) + 411 + 2220;
        }
        if(s >= 300){
            r = ((s - 300) * 30) + 411 + 2220 + 4858;
        }
    }
    console.log("合計金額="  + String(s) + "kWh  " + String(r) + "円");
}

"use strict";
var csv = {
	load:async function(filename,id){
		const responseFile = await fetch(filename);
        const result = await responseFile.text()
		let separate1 = /\r\n/;
		let separate2 = ",";
		let data = (result.split(separate1)).map(function(value){
			return (value.split(separate2)).map(function(value1){
				return value1;
			});
		});
		let sum =[];
		for (const usedata of data) {
            (usedata).map(function(val,index,array){
                sum[index] = (isNaN(parseInt(sum[index]))?0:parseInt(sum[index])) + parseInt(array[index]);
            });
		}
        console.log(sum);
		document.getElementById(id).innerHTML = sum.join(",");
		return "OK";
	}
};
csv.load("math.csv?", "sum");

document.getElementById("Q9_select").innerHTML = (function () {
    let str = "";
    for (var i = 0; i <= 9; i++) {
        str += !i ? "<option value=''> " + "選択してください" + "</option>\n" : "<option value=" + i + ">" + i + "の段</option>\n";
    }
    return str;
})();
document.getElementById("Q9_select").addEventListener("change", function (e) {
    let Q = this.value ? this.value : 0;
    let str = "";
    let view_flg = 1;
    for (var i = 1; i <= 9; i++) {
        let ans = Q * i;
        str += "<p class='h2'><span class='text-primary'>" + Q + "</span> × " + i + "= <span class='Q9_ans' style='visibility:visible'>" + ans + "</span></p>";
    }
    str += "<p class='text-center'><button class='h2 btn btn-primary' id='view'>九九の解を<span id='txt'>非表示に</span>する</button></p>";
    document.getElementById("Q9_view").innerHTML = str;
    document.getElementById("view").addEventListener("click", function () {
        let object = document.getElementsByClassName("Q9_ans");
        for (const key in object) {
            if (Object.hasOwnProperty.call(object, key)) {
                const element = object[key];
                element.style.visibility = view_flg ? "hidden" : "visible";
            }
        }
        view_flg = view_flg ? 0 : 1;
        document.getElementById("txt").innerText = view_flg ? "非表示に" : "表示";
    });
});

<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<meta name="Description" content="お問い合わせ"/>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.2/css/all.min.css">
<title>お問い合わせ</title>
<style>
	body{
		background-color: #f8f9fa;
	}
</style>
</head>
<body>
	<div class="container">
		<div class="row">
			<div class="col-12 mt-5">
				<h2>お問い合わせ</h2>
				<input class="form-control mt-1" type="text" name="name" placeholder="お名前を入力ください">
				<input class="form-control mt-1" type="text" name="email" placeholder="メールアドレスを入力ください">
				<div class="form-group mt-1">
					<label for="my-select">お問い合わせ</label>
					<select id="my-select" class="form-control" name="ptn">
						<option value="問い">お問い合わせ</option>
						<option value="意見">ご意見</option>
					</select>
				</div>
			</div>
		</div>
		<div class="form-group mt-1">
			<label for="my-textarea">内容</label>
			<textarea id="my-textarea" class="form-control" name="text" rows="3" placeholder="内容を入力ください"></textarea>
		</div>
		<button class="btn btn-primary" id="btn" type="button">送信</button>
	</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.1/umd/popper.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/js/bootstrap.min.js"></script>
<script>
	document.getElementById("btn").addEventListener("click",function(){
		let data = {};
		data["name"]  = document.getElementsByName("name")[0].value;
		data["email"] = document.getElementsByName("email")[0].value;
		data["ptn"]   = document.getElementsByName("ptn")[0].value;
		data["text"]  = document.getElementsByName("text")[0].value;
		$.ajax({
			type: "POST",
			dataType: "json",
			url: "./send.php",
			data: data,
			success: function (response) {
				if(response){
					console.log(response);
				}
			}
		});
	});
</script>
</body>
</html>

<?php
print json_encode($_POST);

document.getElementById("money").addEventListener("input",function(){
	var money = document.getElementById("money").value;
	var change = {
		calc1:{yen:10000,change:0,str1:"紙幣",str2:"枚"},
		calc2:{yen:5000,change:0,str1:"紙幣",str2:"枚"},
		// calc33:{yen:2000,change:0,str:"紙幣",str2:"枚"},
		calc3:{yen:1000,change:0,str1:"紙幣",str2:"枚"},
		calc4:{yen:500,change:0,str1:"硬貨",str2:"個"},
		calc5:{yen:100,change:0,str1:"硬貨",str2:"個"},
		calc6:{yen:50,change:0,str1:"硬貨",str2:"個"},
		calc7:{yen:10,change:0,str1:"硬貨",str2:"個"},
		calc8:{yen:5,change:0,str1:"硬貨",str2:"個"},
		calc9:{yen:1,change:0,str1:"硬貨",str2:"個"}
	};
	money = money.replace(/[,|，]/g,"");
	if(money.match(/[0-9]{1,}/g)){
		for (const key in change) {
			if (change.hasOwnProperty(key)) {
				const obj = change[key];
				change[key].change  = Math.floor(money / obj.yen);
				money = money % obj.yen;
			}
		}
		var anser = function() {
			var str = "";
			for (const key in change) {
				if (change.hasOwnProperty(key)) {
					const obj = change[key];
					if(obj.change){
						str+= obj.yen + "円、" + obj.str1 + "が" + obj.change + obj.str2 + "<br>";
					}
				}
			}
			return str;
		};
		document.getElementById("change_print").innerHTML = anser();
	}else{
		document.getElementById("change_print").innerHTML = "入力が不適切です！";
	}
});

<?php
//date_default_timezone_set('Asia/Tokyo');
class moon{
    static public $icon = array(
        "0"=>'?',//朔
        "1"=>'?',//朔
        "2"=>'?',//朔
        "3"=>'?',//三日月
        "4"=>'?',//三日月
        "5"=>'?',//三日月
        "6"=>'?',//三日月
        "7"=>'?',//上弦の月',
        "8"=>'?',//上弦の月',
        "9"=>'?',//上弦の月',
        "10"=>'?',//上弦の月',
        "11"=>'?',//上弦の月',
        "12"=>'?',//十三夜月
        "13"=>'?',//十三夜月
        "14"=>'?',//十三夜月
        "15"=>"?",//望月
        "16"=>"?",//望月
        "17"=>"?",//望月
        "18"=>"?",//望月
        "19"=>"?",//寝待月
        "20"=>"?",//寝待月
        "21"=>"?",//寝待月
        "22"=>"?",//寝待月
        "23"=>'?',//下弦の月
        "24"=>'?',//下弦の月
        "25"=>'?',//下弦の月
        "26"=>"?",//二十六夜月
        "27"=>"?",//二十六夜月
        "28"=>"?",//二十六夜月
        "29"=>"?"//二十六夜月
    );
    static public $res = "0";
    static public $moon_gregorian = array(0,2,0,2,2,4,5,6,7,8,9,10);
    public function main($year=2012,$mon=12,$day=12)
    {
        static::$res = ((($year-11)%19)*11 + static::$moon_gregorian[$mon-1]+$day)%30;
    }
    public function icon(){
        return static::$icon[static::$res];
    }
}

<?php
    moon::main($year,$mon,$day);
    $chg = moon::icon();