Convert SGT (Singapore Time) to PDT (Pacific Daylight Time)

Best time to schedule a meeting

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

SGT to PDT conversion table

About SGT

Singapore Time (SGT) is UTC+8. It is used in Singapore and Malaysia.

Singapore Time is UTC+8 with no daylight saving. The offset is a historical curiosity: Singapore sits at about 104°E, which is geographically UTC+7, and moved to +8 in 1982 to align with Malaysia and Hong Kong for trade. The result is that the sun is at its highest around 1pm rather than noon, and sunrise is late all year.

About PDT

Pacific Daylight Time (PDT) is UTC−7. It is used in Los Angeles, San Francisco and Seattle from March to November.

Pacific Daylight Time is UTC−7, the summer clock for Los Angeles, San Francisco, Seattle and Vancouver. It is the zone most product launches and software release times are quoted in, and it is worth converting rather than eyeballing: PDT is eight hours behind British Summer Time, not seven, because both sides have moved.

Does this gap change with the seasons?

This gap is seasonal. The abbreviations themselves are fixed offsets, but the region on PDT switches to PST (UTC−8) from November to March. 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.

SGT does not shift, so the whole change comes from one side. A recurring meeting fixed in SGT 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