SGT to EST Time Converter
EST is 12 hours behind SGT. SGT is UTC+8:00, and The US East Coast is currently on EDT (UTC-4:00).
Best Time to Call Between SGT and EST
Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 10:00 AM SGT, which is 7:00 PM to 10:00 PM EST.
both at work SGT only EST only neither — hours along the strip are SGT.
Common Times Converted
SGT on the left, EST on the right.
SGT to EST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| SGT | EST | Working hours |
|---|---|---|
| 12:00 AM | 12:00 PM prev day | EST only |
| 1:00 AM | 1:00 PM prev day | EST only |
| 2:00 AM | 2:00 PM prev day | EST only |
| 3:00 AM | 3:00 PM prev day | EST only |
| 4:00 AM | 4:00 PM prev day | EST only |
| 5:00 AM | 5:00 PM prev day | — |
| 6:00 AM | 6:00 PM prev day | — |
| 7:00 AM | 7:00 PM prev day | — |
| 8:00 AM | 8:00 PM prev day | — |
| 9:00 AM | 9:00 PM prev day | SGT only |
| 10:00 AM | 10:00 PM prev day | SGT only |
| 11:00 AM | 11:00 PM prev day | SGT only |
| 12:00 PM | 12:00 AM | SGT only |
| 1:00 PM | 1:00 AM | SGT only |
| 2:00 PM | 2:00 AM | SGT only |
| 3:00 PM | 3:00 AM | SGT only |
| 4:00 PM | 4:00 AM | SGT only |
| 5:00 PM | 5:00 AM | — |
| 6:00 PM | 6:00 AM | — |
| 7:00 PM | 7:00 AM | — |
| 8:00 PM | 8:00 AM | — |
| 9:00 PM | 9:00 AM | EST only |
| 10:00 PM | 10:00 AM | EST only |
| 11:00 PM | 11:00 AM | EST only |
What SGT and EST Actually Are
SGT — Singapore Time
Singapore. Standing at UTC+8:00 as written, and the region does not change its clocks, so that offset holds all year.
Singapore sits at a longitude that would put it near UTC+7, but moved to UTC+8 in 1982 to align with Malaysia and Hong Kong — a trade decision rather than a solar one.
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
What This Means in Practice
The date changes mid-working-day
For 3 of the eight hours in a normal SGT working day, the equivalent EST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.
This gap is not fixed
EST changes its clocks and SGT does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Nearly opposite sides of the clock
At 12 hours apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.
Major Cities in Each Zone
Cities on SGT
Cities on EST
Frequently Asked Questions
What is the time difference between SGT and EST?
EST is 12 hours behind SGT. That is the live figure. Taken strictly as written, the gap between SGT and EST is 13 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM SGT in EST?
9:00 AM SGT is 9:00 PM the previous day EST.
What are the best hours to schedule a call between SGT and EST?
Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 7:00 AM to 10:00 AM SGT, which is 7:00 PM to 10:00 PM EST.
Does the difference between SGT and EST change during the year?
Yes. EST observes daylight saving and SGT does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.