Bangkok and Chicago time difference

Chicago is 12 hours behind Bangkok for most of the year.

Plan a meeting in Bangkok and ChicagoOpens the free planner with both cities: drag the bands to any day and time, add more cities, and share the result.

Their 09:00–17:00 work days do not overlap: 09:00 in Bangkok is 21:00 in Chicago, and 17:00 in Bangkok is 05:00 there. A meeting needs an early start or a late finish on one side.

Hour by hour

On a usual work day (October 14, 2026). Green is 09:00–17:00 work time, dark is night (21:00–07:00).

Bangkok	Chicago
00:00, Night	12:00previous day, Work hours
01:00, Night	13:00previous day, Work hours
02:00, Night	14:00previous day, Work hours
03:00, Night	15:00previous day, Work hours
04:00, Night	16:00previous day, Work hours
05:00, Night	17:00previous day, Off hours
06:00, Night	18:00previous day, Off hours
07:00, Off hours	19:00previous day, Off hours
08:00, Off hours	20:00previous day, Off hours
09:00, Work hours	21:00previous day, Night
10:00, Work hours	22:00previous day, Night
11:00, Work hours	23:00previous day, Night
12:00, Work hours	00:00, Night
13:00, Work hours	01:00, Night
14:00, Work hours	02:00, Night
15:00, Work hours	03:00, Night
16:00, Work hours	04:00, Night
17:00, Off hours	05:00, Night
18:00, Off hours	06:00, Night
19:00, Off hours	07:00, Off hours
20:00, Off hours	08:00, Off hours
21:00, Night	09:00, Work hours
22:00, Night	10:00, Work hours
23:00, Night	11:00, Work hours

Through the year

Dates	Difference
October 8, 2026–October 31, 2026	Chicago is 12 hours behind Bangkok
November 1, 2026–March 13, 2027	Chicago is 13 hours behind Bangkok
March 14, 2027–October 7, 2027	Chicago is 12 hours behind Bangkok

Clock changes

Bangkok does not change its clocks.

Chicago: November 1, 2026: clocks go back 1 hour; March 14, 2027: clocks go forward 1 hour.

Questions

What time is it in Chicago when it is 09:00 in Bangkok?

On a usual day it is 21:00 in Chicago.

Do Bangkok and Chicago change their clocks on the same day?

Only Chicago changes its clocks, so the difference changes with its summer time; see the table above.