Europe/Kyiv. The UTC offset is UTC+2 in winter (standard time) and UTC+3 during daylight saving time (summer).Europe/Kyiv. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'Europe/Kyiv' })`), Python (`pytz.timezone('Europe/Kyiv')`), or any IANA-compatible library.