By using pure javascript, i want to predict a future date and past date based on the user input date. considering lotto draw happens every wednesday and saturday at 8pm.

I have the code logic, but i need some help to finish this logic.
then main problem is to find the correct past and future dates. please help me.

function getNextLottoDraw(date) {

const dayOfWeek = date.getDay(); // dayOfWeek = day of the week 0 - 6 (sun - sat)
const hour = date.getHours(); // hour as per pm/am 
const minute = date.getMinutes(); // Mins as mins


let nextDraw = new Date(date);
// console.log("r--->", nextDraw );

if (dayOfWeek === 3) { // Wednesday
    if (hour < 20 || (hour === 20 && minute === 0)) {
        nextDraw.setHours(20, 0, 0, 0);
        // console.log("p1--->", nextDraw );
    } else {
        nextDraw.setDate(nextDraw.getDate() + 3); // Next draw is Saturday
        // console.log("p2--->", nextDraw );
        nextDraw.setHours(20, 0, 0, 0);
        // console.log("p2 22--->", nextDraw );
    }
} else if (dayOfWeek === 6) { // Saturday
    if (hour < 20 || (hour === 20 && minute === 0)) {
        nextDraw.setHours(20, 0, 0, 0);
        // console.log("W11---->", nextDraw );
    } else {
        nextDraw.setDate(nextDraw.getDate() + 4); // Next draw is Wednesday
        nextDraw.setHours(20, 0, 0, 0);
        // console.log("W22---->", nextDraw );
    }
} else {
    // console.log("else--->>");
    let daysToAdd;
    if (dayOfWeek < 3) { // Before Wednesday
        daysToAdd = 3 - dayOfWeek;
        // console.log("D11---->", daysToAdd, dayOfWeek );
    } else { // After Wednesday, before Saturday
        daysToAdd = 6 - dayOfWeek;
        // console.log("D22---->", daysToAdd, dayOfWeek  );
    }
    nextDraw.setDate(nextDraw.getDate() + daysToAdd);
    nextDraw.setHours(20, 0, 0, 0);
    // console.log("last --->", nextDraw);
}

return nextDraw;

}

function calculateDrawDates() {

const input = document.getElementById('datetime-input').value;
const inputDate = new Date(input);
if (isNaN(inputDate)) {
    alert('Please enter a valid date and time.');
    return;
}
const resultsTable = document.getElementById('results-table').querySelector('tbody');
resultsTable.innerHTML = ''; // Clear previous results

const draws = [];
let nextDrawDate = getNextLottoDraw(inputDate);
console.log("result for future draws --->",nextDrawDate )

for (let i = -2; i <= 2; i++) {
    let currentDrawDate = new Date(nextDrawDate);
    if (i < 0) {
        currentDrawDate.setDate(nextDrawDate.getDate() + i * 3); // For past dates, subtract 3 days per draw
    } else if (i > 0) {
        if(nextDrawDate.getDay() === 6) {
            currentDrawDate.setDate(nextDrawDate.getDate() + 4);
            console.log("mmm11---", currentDrawDate);
        } else {
            currentDrawDate.setDate(nextDrawDate.getDate() + 3);
            console.log("mmm22---", currentDrawDate);
        }
    }

    draws.push({
        date: currentDrawDate,
        status: currentDrawDate < inputDate ? 'Past' : 'Future'
    });
}

draws.forEach(draw => {
    const row = document.createElement('tr');
    const dateCell = document.createElement('td');
    const statusCell = document.createElement('td');

    dateCell.textContent = draw.date.toDateString();
    statusCell.textContent = draw.status;

    row.appendChild(dateCell);
    row.appendChild(statusCell);
    row.classList.add('fade-in');

    resultsTable.appendChild(row);
});

}