America/Port_of_Spain. The UTC offset is always UTC-4 — this timezone does not observe daylight saving time.America/Port_of_Spain. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'America/Port_of_Spain' })`), Python (`pytz.timezone('America/Port_of_Spain')`), or any IANA-compatible library.