SGT to EDT Converter
Convert time between Singapore Standard Time (SGT) and Eastern Daylight Time (EDT)
Singapore Standard Time (SGT)
Eastern Daylight Time (EDT)
Time Difference
Eastern Daylight Time (EDT) is 0 hours ahead of Singapore Standard Time (SGT)
Select Date
Select Time
Quick Reference
| SGT | EDT |
|---|---|
| 10:00 | 22:00 |
| 12:00 | 00:00 |
| 14:00 | 02:00 |
| 16:00 | 04:00 |
| 18:00 | 06:00 |
| 20:00 | 08:00 |
| 22:00 | 10:00 |
| 00:00 | 12:00 |
| 02:00 | 14:00 |
| 04:00 | 16:00 |
| 06:00 | 18:00 |
| 08:00 | 20:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About SGT to EDT Time Conversion
Converting time between Singapore Standard Time (SGT) and Eastern Daylight Time (EDT) is essential for coordinating with the US East Coast during the summer half-year. SGT is UTC+8 year-round, while EDT is UTC-4, placing Singapore exactly 12 hours ahead — the simplest possible offset (just flip AM and PM). EDT applies from mid-March to early November; outside that window the region observes EST (UTC-5) and the gap grows to 13 hours.
This time zone converter uses the IANA timezone database to ensure accurate calculations, automatically handling the EST/EDT switch. Singapore never observes DST, so the seasonal variation in the SGT-Eastern US offset comes entirely from the American side. Whether you're scheduling Singapore-New York business calls in the summer, planning travel, or coordinating with partners in Toronto, Boston, Atlanta or Miami, our converter provides reliable results.
Common Use Cases for SGT to EDT Conversion
Business & Work
- Scheduling summer meetings between Singapore and New York offices
- Coordinating equity-markets timing between SGX and NYSE / NASDAQ during DST
- Planning conference calls with US East Coast partners while EDT is in effect
Personal & Travel
- Planning travel between Singapore and the US East Coast in the summer
- Coordinating with family and friends in New York, Boston, Toronto or Miami
- Scheduling virtual events bridging Asia and the US East Coast
Time Zone Information
Singapore Standard Time (SGT)
- UTC Offset: UTC+8
- IANA Timezone: Asia/Singapore
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Singapore
- Coverage: Republic of Singapore
Eastern Daylight Time (EDT)
- UTC Offset: UTC-4
- IANA Timezone: America/New_York
- Daylight Saving: Active from second Sunday in March to first Sunday in November (reverts to EST UTC-5)
- Major Cities: New York, Toronto, Washington DC, Boston, Atlanta, Miami, Philadelphia, Detroit
- Coverage: Eastern United States and parts of Canada during DST
Quick Reference: SGT to EDT
Remember: EDT is exactly 12 hours behind SGT during US daylight saving — just flip AM and PM. From early November to mid-March, the US East Coast is on EST and the gap grows to 13 hours.
Frequently Asked Questions
What is the time difference between SGT and EDT?
Singapore Standard Time (SGT) is UTC+8, while US Eastern Daylight Time (EDT) is UTC-4. SGT is exactly 12 hours ahead of EDT — just flip AM and PM. When it is 12:00 PM in Singapore, it is 12:00 AM the same day in New York or Toronto.
When is EDT in effect?
EDT applies from the second Sunday in March to the first Sunday in November. Outside that window the US East Coast is on EST (UTC-5) and the SGT gap grows to 13 hours.
Does Singapore observe daylight saving time?
No. Singapore stays on SGT (UTC+8) year-round. Any seasonal shift in the SGT-EDT offset is driven by the US East Coast switching between EST and EDT.
What are the best times for SGT-EDT business calls?
The SGT-EDT offset is 12 hours, so live overlap is limited to early morning on one side. Singapore evening (8:00 to 10:00 PM SGT) maps to US Eastern morning (8:00 to 10:00 AM EDT) — a clean overlap for both. For a US East Coast afternoon slot, very early Singapore morning (2:00 to 4:00 AM SGT) reaches 2:00 to 4:00 PM EDT.
Which countries or regions use EDT?
EDT is observed across the US Eastern Time zone during daylight saving — New York, Florida, Georgia, the Carolinas, Pennsylvania, Ohio, Michigan and many other states — plus parts of eastern Canada including Toronto and Montreal.
Which countries or regions use SGT?
Singapore Standard Time is used only in the Republic of Singapore. UTC+8 is shared with Malaysia, Western Australia, Hong Kong, the Philippines and most of mainland China.
Pro Tips
- • EDT is exactly 12 hours behind SGT — just flip AM and PM during the US summer.
- • From early November to mid-March the US East Coast is on EST and the offset becomes 13 hours. Refresh recurring invites near the transitions.
- • Singapore never observes DST, so all seasonal variation in the offset comes from the US side.
- • Singapore evening (8:00 to 10:00 PM SGT) is the cleanest overlap with US East Coast morning business hours.
- • For a US East Coast afternoon slot, you will need an early Singapore morning call — plan accordingly.
- • Use IANA identifiers Asia/Singapore and America/New_York in calendars to handle the EST/EDT switch automatically.