Get the Day of the Week for a Time Zone

getDayOfWeek.js

const getDayOfWeek = () => {
  // uses the date object and the browser time to get the day of week name
  // ie "Monday", etc, uses timezone iana formats from http://www.iana.org/time-zones
  const options = { weekday: 'long', timeZone: 'Pacific/Honolulu' };
  return new Date().toLocaleDateString('en-us', options)
}