Task: Question Answering
Input (English): Passage: Time in South Korea -- South Korea has one timezone, Korea Standard Time (UTC+09:00), which is abbreviated KST. South Korea does not currently observe daylight saving time, but experimented with it during the 1988 Summer Olympics in Seoul. North Korea used Korea Standard Time until 2015, when it adopted Pyongyang Standard Time (UTC+08:30).
Question: are there different time zones in south korea
Output (English): 0