tgl.js

/**
 * Author  : Gimenz
 * Name    : nganu
 * Version : 1.0
 * Update  : 09 Januari 2022
 * 
 * If you are a reliable programmer or the best developer, please don't change anything.
 * If you want to be appreciated by others, then don't change anything in this script.
 * Please respect me for making this tool from the beginning.
 */

const moment = require('moment-timezone');
moment.tz.setDefault('Asia/Jakarta').locale('jv');

// some part of this code is copied from => https://mumet.ndas.se/
var fixd;
function isGregLeapYear(year) {
    return (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
}

function gregToFixed(year, month, day) {
    var a = Math.floor((year - 1) / 4);
    var b = Math.floor((year - 1) / 100);
    var c = Math.floor((year - 1) / 400);
    var d = Math.floor((367 * month - 362) / 12);
    if (month <= 2) e = 0;
    else if (month > 2 && isGregLeapYear(year)) e = -1;
    else e = -2;
    return 1 - 1 + 365 * (year - 1) + a - b + c + d + e + day;
}

class Hijri {
    constructor(year, month, day) {
        this.year = year;
        this.month = month;
        this.day = day;
        this.toFixed = hijriToFixed;
        this.toString = hijriToString;
    }
}
function hijriToFixed() {
    return (
        this.day +
        Math.ceil(29.5 * (this.month - 1)) +
        (this.year - 1) * 354 +
        Math.floor((3 + 11 * this.year) / 30) +
        227015 -
        1
    );
}

function hijriToString() {
    var months = new Array(
        'Suro',
        'Sapar',
        'Mulud',
        'Bakdo Mulud',
        'Jumadilawal',
        'Jumadilakhir',
        'Rejeb',
        'Ruwah',
        'Poso',
        'Sawal',
        "Dulkai'dah",
        'Besar'
    );
    return this.day + ' ' + months[this.month - 1] + ' ' + this.year;
}

function fixedToHijri(f) {
    var i = new Hijri(1100, 1, 1);
    i.year = Math.floor((30 * (f - 227015) + 10646) / 10631);
    var i2 = new Hijri(i.year, 1, 1);
    var m = Math.ceil((f - 29 - i2.toFixed()) / 29.5) + 1;
    i.month = Math.min(m, 12);
    i2.year = i.year;
    i2.month = i.month;
    i2.day = 1;
    i.day = f - i2.toFixed() + 1;
    return i;
}
var tod = new Date();
var weekday = new Array(
    'Minggu',
    'Senin',
    'Selasa',
    'Rabu',
    'Kamis',
    'Jumat',
    'Sabtu'
);
var monthname = new Array(
    'Januari',
    'Pebruari',
    'Maret',
    'April',
    'Mei',
    'Juni',
    'Juli',
    'Agustus',
    'September',
    'Oktober',
    'Nopember',
    'Desember'
);
var y = tod.getFullYear();
var m = tod.getMonth();
var d = tod.getDate();
var dow = tod.getDay();
m++;
fixd = gregToFixed(y, m, d);
var h = new Hijri(1421, 11, 28);
h = fixedToHijri(fixd);

var pasar = new Array('Legi', 'Pahing', 'Pon', 'Wage', 'Kliwon');
var hari = moment().format('dddd');
var tgal = moment().format('DD MMMM YYYY');
var d2 = moment('2014-01-27');
var d1 = moment();
var selisih = Math.floor(Math.abs(d1 - d2) / 86400000);
var a = pasar[selisih % 5];
var tgl = `${hari} ${a}, ${tgal}`;

exports.pasaran = () => {
    return {
        hijriyah: h.toString(),
        jawa: tgl,
    };
}