Convert CDT (Central Daylight Time) to ICT (Indochina Time)

Best time to schedule a meeting

Standard 9–5 working hours do not overlap at all between CDT and ICT. Someone has to take an early or late call — or use asynchronous communication instead.

CDT to ICT conversion table

About CDT

Central Daylight Time (CDT) is UTC−5. It is used in Chicago, Dallas and Houston from March to November.

Central Daylight Time is UTC−5, the summer clock for Chicago, Dallas and Houston, from the second Sunday in March to the first Sunday in November. Mexico is the complication: it abolished daylight saving nationally in 2022, so Mexico City stays on UTC−6 all year and is now an hour behind Chicago for eight months of the year rather than matching it.

About ICT

Indochina Time (ICT) is UTC+7. It is used in Bangkok, Hanoi, Ho Chi Minh City and Jakarta.

Indochina Time is UTC+7, covering Thailand, Vietnam, Cambodia and Laos, with no daylight saving in any of them. Bangkok and Hanoi keep the same clock, which makes the region unusually simple to schedule across — the complication is only ever with the countries around it, since Myanmar is at UTC+6:30 and Malaysia at UTC+8.

Does this gap change with the seasons?

This gap is seasonal. The abbreviations themselves are fixed offsets, but the region on CDT switches to CST (UTC−6) from November to March. So the 12-hour figure on this page is correct for the part of the year when both places are actually on these abbreviations, and changes by an hour outside it.

ICT does not shift, so the whole change comes from one side. A recurring meeting fixed in ICT will appear to move by an hour for everyone on the other side, twice a year, without anyone changing anything.

This is the reason scheduling systems store an IANA zone such as Region/City rather than an offset or an abbreviation: the zone knows its own rules and the offset does not.

Frequently asked questions