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Time difference between Bangkok and Chicago

Chicago is 12 hours behind Bangkok

Bangkok, Thailand is UTC+7 · Chicago, the United States is UTC−6 — on standard time

The gap is not the same all year

Every converter gives one number for this pair. That number is right for most of the year and wrong for part of it, because Bangkok does not change its clocks and Chicago goes forward on the second Sunday in March and back on the first Sunday in November.

Bangkok / Chicago clocksDifferenceHow long
standard / summer12 hours behindabout 34 weeks — most of the year
standard / standard13 hours behindabout 18 weeks

Bangkok stays put all year while Chicago moves, so the gap changes twice a year from Chicago's side alone. A recurring meeting set in Bangkok's calendar will drift by an hour without anyone touching it.

When they can both be at their desks

Nine-to-five in Bangkok and nine-to-five in Chicago do not overlap at all. With 12 hours between them, one side is always outside working hours, and the practical question is which side takes the early start or the late finish rather than when to meet.

Bangkok to Chicago, hour by hour

BangkokChicago
12:00 AM12:00 PM (previous day)
1:00 AM1:00 PM (previous day)
2:00 AM2:00 PM (previous day)
3:00 AM3:00 PM (previous day)
4:00 AM4:00 PM (previous day)
5:00 AM5:00 PM (previous day)
6:00 AM6:00 PM (previous day)
7:00 AM7:00 PM (previous day)
8:00 AM8:00 PM (previous day)
9:00 AM9:00 PM (previous day)
10:00 AM10:00 PM (previous day)
11:00 AM11:00 PM (previous day)
12:00 PM12:00 AM
1:00 PM1:00 AM
2:00 PM2:00 AM
3:00 PM3:00 AM
4:00 PM4:00 AM
5:00 PM5:00 AM
6:00 PM6:00 AM
7:00 PM7:00 AM
8:00 PM8:00 AM
9:00 PM9:00 AM
10:00 PM10:00 AM
11:00 PM11:00 AM

On the usual gap of 12 hours.

Frequently asked questions

What is the time difference between Bangkok and Chicago?

Chicago is 12 hours behind Bangkok for most of the year. It is not the same all year — there is one other gap, because Bangkok does not change its clocks and Chicago goes forward on the second Sunday in March and back on the first Sunday in November.

Is Chicago ahead of Bangkok?

No — Chicago is 12 hours behind. Bangkok is UTC+7 and Chicago is UTC−6 on standard time.

What time is 9 AM in Bangkok in Chicago?

9:00 PM (previous day), on the usual gap.

When can Bangkok and Chicago meet?

Nine-to-five in Bangkok and nine-to-five in Chicago do not overlap at all. One side has to take the call outside working hours, and with 12 hours between them it is worth deciding in advance which side that is.

Other pairs

Every Bangkok pair · Every Chicago pair · All city pairs · Time zones by abbreviation