Convert PST (Pacific Standard Time) to ICT (Indochina Time)

Best time to schedule a meeting

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

PST to ICT conversion table

About PST

Pacific Standard Time (PST) is UTC−8. It is used in Los Angeles, San Francisco, Seattle and Vancouver in winter.

Pacific Standard Time is UTC−8, used by Los Angeles, San Francisco, Seattle and Vancouver from November to March. As with EST, the abbreviation is written all year in practice — a great deal of software, and most conference invitations from the US west coast, say PST when the sender means PDT. If a time from a US source looks an hour off between March and November, this is almost always why.

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 PST switches to PDT (UTC−7) from March to November. So the 15-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