Time Difference Between Mongolia and Hawaii

Mongolia Is 21 Hours Ahead of Hawaii

When it is 12:00 PM (noon) in Hawaii, it is 9:00 AM the next day in Mongolia.

Mongolia uses UTC+8 year-round; Hawaii uses UTC-10 (no daylight saving). The 18-hour standard offset becomes 21 hours when Hawaii is on standard time (always) and Mongolia does not observe DST.