Chicago is 12 hours behind Bangkok.
Time difference
Bangkok is 12 to 13 hours ahead of Chicago, depending on daylight saving time. The gap changes by an hour when Chicago shifts its clocks for daylight saving time; Bangkok stays on the same offset year-round.
Working hours
A standard 9-to-6 workday in Chicago does not overlap with Bangkok. The least disruptive time to connect is around 09:00 in Chicago, which is 21:00 in Bangkok.
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