The getUTCDay() method of the Date object returns the day of the week for the date according to universal time, where 0 is Sunday and 6 is Saturday.

    
    const date = new Date('July 20, 2020 21:36:00 GMT+11:00');

    const utcDay = date.getUTCDay();

    console.log(utcDay);
    // 1