UQU.js

function hijriToCalendars(year, month, day, op={}) {
 op.fromCal ??= "islamic-umalqura";   //
let   gD      = new Date(Date.UTC(2000,0,1));
      gD      = new Date(gD.setUTCDate(gD.getUTCDate() +
                ~~(227022+(year+(month-1)/12+day/354)*354.367)));
const gY      = gD.getUTCFullYear(gD)-2000,
      dFormat = new Intl.DateTimeFormat('en-u-ca-' + op.fromCal, {dateStyle:'short', timeZone:'UTC'});
      gD      = new Date(( gY < 0 ? "-" : "+")+("00000" + Math.abs(gY)).slice(-6)+"-"+("0" + (gD.getUTCMonth(gD)+1)).slice(-2)+"-" + ("0" + gD.getUTCDate(gD)).slice(-2));
let [iM,iD,iY]= [...dFormat.format(gD).split("/")], i=0;
      gD      = new Date(gD.setUTCDate(gD.getUTCDate() +
                ~~(year*354+month*29.53+day-(iY.split(" ")[0]*354+iM*29.53+iD*1)-2)));
while (i < 4) {
   [iM,iD,iY] = [...dFormat.format(gD).split("/")];
   if (iD == day && iM == month && iY.split(" ")[0] == year) return formatOutput(gD);
   gD = new Date(gD.setUTCDate(gD.getUTCDate()+1)); i++;
   }
throw new Error("Invalid "+op.fromCal+" date!");
function formatOutput(gD){
return "toCal"in op ? (op.calendar= op.toCal,
    new Intl.DateTimeFormat(op.locale ??= "en", op).format(gD)) : gD;
}
}
undefined
const tableOfTest = []
undefined
const timeTable = [
  {"start": "08:00", "end": "10:00"},
  {"start": "10:15", "end": "12:15"},
  {"start": "12:30", "end": "14:30"},
  {"start": "14:45", "end": "16:45"},
  {"start": "17:00", "end": "19:00"},
  {"start": "19:15", "end": "21:15"}
]

document.querySelectorAll(".is-active [class*='ROW']").forEach((elem)=> { 
    const theData = {"thetime": elem.lastElementChild?.childNodes[0]?.childNodes[1].childNodes[1].childNodes[3].innerText.trim(), "thedate": elem.lastElementChild?.childNodes[0]?.childNodes[1].childNodes[1].childNodes[1].innerText.trim(), "thesubject": elem.childNodes[3].innerText.trim()
}
    if(!(Object.values(theData).indexOf(undefined) > -1)){
        tableOfTest.push({...theData, ...{"thetime": JSON.stringify(timeTable[parseInt(theData["thetime"]) - 1])}, ...{"thedate": hijriToCalendars( ...theData["thedate"].split('-').map(i => parseInt(i)).reverse()).toString().replace(/\d{2}\:.*?$/g, "")}})
    } 
})

console.table(tableOfTest)