function displayDateTime() {
        const daysOfWeek = ["neděle", "pondělí", "úterý", "středa", "čtvrtek", "pátek", "sobota"];

        const currentDate = new Date();
        const dayOfWeek = daysOfWeek[currentDate.getDay()];
        const day = currentDate.getDate();
        const month = currentDate.getMonth();
        const year = currentDate.getFullYear();
        const hours = currentDate.getHours();
        const minutes = currentDate.getMinutes();

        const output = `Dnes je ${dayOfWeek}, ${day}. ${month}. ${year}. Čas ${hours}:${minutes}`;

        document.body.innerHTML =  `${output}`;
    }