unleash.unleash/frontend/src/component/common/util.js

const dateTimeOptions = {
    day: '2-digit',
    month: '2-digit',
    year: 'numeric',
    hour: '2-digit',
    minute: '2-digit',
    second: '2-digit',
};
export const formatFullDateTimeWithLocale = (v, locale, tz) => {
    if (tz) {
        dateTimeOptions.timeZone = tz;
    }
    return new Date(v).toLocaleString(locale, dateTimeOptions);
};