Course Project Step: A World Clock

Build a world clock for three cities that matter to you. Each city gets a card with its name, the time as HH:MM:SS, the date in words and the zone's short name, all from Intl.DateTimeFormat. Store the cities as an array of objects with a name and a time zone, draw one card per city from that array, and update every card four times a second with setInterval. Add a fourth city to the array and its card should appear without touching the HTML.