A number. If the Date object represents a valid date, an integer number ranging from 1 to 31 representing day of month for the given date, according to universal time. Otherwise, NaN if the Date object doesn't represent a valid date.

The following example assigns the day of month of the current date to the variable dayOfMonth.

const today = new Date();
const dayOfMonth = today.getUTCDate();

• Date.prototype.getUTCDate()
• Date.prototype.getDay()
• Date.prototype.setUTCDate()