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Ulaanbaatar is -1h behind Seoul
Quick converter
FROM
Seoul
South Korea
UTC+09:00
TO
Ulaanbaatar
Mongolia
UTC+08:00
Date-aware conversion
Result
Thu, Jul 16, 2026 19:18
Seoul: Thursday, July 16, 2026 8:18 PM GMT+9 to Ulaanbaatar: Thursday, July 16, 2026 7:18 PM GMT+8.
Ulaanbaatar is 1h behind Seoul on this date
Every hour in Seoul and the corresponding time in Ulaanbaatar. Green rows indicate business hours in Ulaanbaatar.
Time zones
Seoul uses Asia/Seoul (GMT+9) and Ulaanbaatar uses Asia/Ulaanbaatar (GMT+8). The difference can shift during daylight saving changes, so checking the exact date matters.
Best use
Use the green rows to spot normal working hours in Ulaanbaatar. For teams across more cities, open the meeting planner and compare up to five locations.
Plan a meetingMeeting guidance
The easiest overlap starts around 10:00 AM and runs through 5:00 PM in the source city, while the destination city is also inside normal working hours. For important calls, check the meeting date because the offset can change when either location enters or leaves daylight saving time.
Compare meeting hoursQuick examples
City context
Seoul is located in South Korea (Asia). It uses the Asia/Seoul timezone with a standard offset of UTC+09:00. It does not observe Daylight Saving Time. See the full Seoul time page for live clock and planning details.
Ulaanbaatar is located in Mongolia (Asia). It uses the Asia/Ulaanbaatar timezone with a standard offset of UTC+08:00. It observes DST, switching between ULAT and ULAST. See the full Ulaanbaatar time page for live clock and planning details.
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