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Date.prototype.getUTCDay()
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Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The getUTCDay() method of Date instances returns the day of the week for this date according to universal time, where 0 represents Sunday.
const date1 = new Date("August 19, 1975 23:15:30 GMT+11:00");
const date2 = new Date("August 19, 1975 23:15:30 GMT-11:00");
// Tuesday
console.log(date1.getUTCDay());
// Expected output: 2
// Wednesday
console.log(date2.getUTCDay());
// Expected output: 3
An integer corresponding to the day of the week for the given date according to universal time: 0 for Sunday, 1 for Monday, 2 for Tuesday, and so on. Returns NaN if the date is invalid.
The following example assigns the weekday portion of the current date to the variable weekday.
js
const today = new Date();
const weekday = today.getUTCDay();