Get Brazilian Date Time String (UTC-3) - A javascript function to return a datetime string in UTC-3 in the format "yyyy/mm/dd hh:mm:ss" from a Date object

getBrazilianDateTimeString.js

/**
 * Returns a UTC-3 datetime string from a given date object
 * @param {Date} date The date to retrieve the string from (default current date)
 * @returns {'2021-07-29 23:37:25' | string} A string in the format  "yyyy/mm/dd hh:mm:ss"
 */
function getBrazilianDateTimeString(date = new Date()) {
    date.setTime(date.getTime() - 3 * 60 * 60 * 1000);
    return date.toISOString().replace("T", " ").split(".")[0];
}