Antarctica/Troll. The UTC offset is UTC+0 in winter (standard time) and UTC+2 during daylight saving time (summer).Antarctica/Troll. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'Antarctica/Troll' })`), Python (`pytz.timezone('Antarctica/Troll')`), or any IANA-compatible library.