San Francisco to Singapore Time Converter
Live overlap scrubber for scheduling meetings between San Francisco, United States and Singapore, Singapore.
San Francisco vs Singapore Overlap
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San Francisco
PDTThu, Sep 24
•Singapore
GMT+8Thu, Sep 24
•The Time Gap Between San Francisco and Singapore
San Francisco runs at UTC-8 in January and UTC-7 in July, shifting its clocks for Daylight Saving Time.
Singapore runs at a fixed UTC+8 year-round, with no Daylight Saving Time.
Because only San Francisco observes Daylight Saving Time, the gap changes every time its clocks do: it runs 15 hours for roughly 8 months of the year and 16 hours for the other 4. Any recurring meeting between these two needs to be checked twice a year, not set once and forgotten.
Realistic Overlap for a Standard 9-to-5
Assuming a standard 9am–5pm workday on both ends, San Francisco and Singapore share no true overlap. There's no window where both teams are in a standard workday at the same time, so this pairing needs to run async by default, with any live call landing outside someone's normal hours.
- January: the one-hour slot that splits the inconvenience most evenly is 4:30pm in San Francisco = 8:30am in Singapore (next day).
- July: the one-hour slot that splits the inconvenience most evenly is 5:00pm in San Francisco = 8:00am in Singapore (next day).
2026 Clock Changes for San Francisco and Singapore
These are the dates in 2026 when the gap between the two cities changes. Around each one, check that recurring invites still land where you expect — calendar apps anchor a meeting to its organizer's time zone, so it's the other side's local time that moves.
- Jan 1 — Singapore is 16 hours ahead of San Francisco.
- Mar 8 — San Francisco springs forward to UTC-7, so Singapore is now 15 hours ahead of San Francisco.
- Nov 1 — San Francisco falls back to UTC-8, so Singapore is now 16 hours ahead of San Francisco.
Hour-by-Hour: San Francisco to Singapore
San Francisco's day from 7am to 10pm, with the matching time in Singapore in January and July. Green is a standard 9-to-5, amber is the early-morning or evening fringe, and grey is when people are usually asleep.
| San Francisco | Singapore (January) | Singapore (July) |
|---|---|---|
| 7:00am | 11:00pm (asleep) | 10:00pm (asleep) |
| 8:00am | 12:00am +1 day (asleep) | 11:00pm (asleep) |
| 9:00am | 1:00am +1 day (asleep) | 12:00am +1 day (asleep) |
| 10:00am | 2:00am +1 day (asleep) | 1:00am +1 day (asleep) |
| 11:00am | 3:00am +1 day (asleep) | 2:00am +1 day (asleep) |
| 12:00pm | 4:00am +1 day (asleep) | 3:00am +1 day (asleep) |
| 1:00pm | 5:00am +1 day (asleep) | 4:00am +1 day (asleep) |
| 2:00pm | 6:00am +1 day (asleep) | 5:00am +1 day (asleep) |
| 3:00pm | 7:00am +1 day (fringe) | 6:00am +1 day (asleep) |
| 4:00pm | 8:00am +1 day (fringe) | 7:00am +1 day (fringe) |
| 5:00pm | 9:00am +1 day (work) | 8:00am +1 day (fringe) |
| 6:00pm | 10:00am +1 day (work) | 9:00am +1 day (work) |
| 7:00pm | 11:00am +1 day (work) | 10:00am +1 day (work) |
| 8:00pm | 12:00pm +1 day (work) | 11:00am +1 day (work) |
| 9:00pm | 1:00pm +1 day (work) | 12:00pm +1 day (work) |
| 10:00pm | 2:00pm +1 day (work) | 1:00pm +1 day (work) |
PST to SGT: What the Abbreviations Mean
PST — Pacific Standard Time (PST, UTC-8) runs part of the year; the rest of the year the same clocks are on Pacific Daylight Time (PDT, UTC-7) instead. People casually say "PST" for both — the scrubber above already resolves whichever one is actually in effect for the date you pick.
SGT — Singapore Time (SGT) is fixed at UTC+8 year-round — it does not observe Daylight Saving Time.
Timezone abbreviations aren't globally unique — several regions reuse the same three or four letters for unrelated zones. The scrubber is anchored to IANA timezone data (America/Los_Angeles and Asia/Singapore) rather than the abbreviation text, so there's no ambiguity in the actual conversion.