SGT to AKST Converter
Convert time between Singapore Standard Time (SGT) and Alaska Standard Time (AKST)
Singapore Standard Time (SGT)
Alaska Standard Time (AKST)
Time Difference
Alaska Standard Time (AKST) is 0 hours ahead of Singapore Standard Time (SGT)
Select Date
Select Time
Quick Reference
| SGT | AKST |
|---|---|
| 10:00 | 18:00 |
| 12:00 | 20:00 |
| 14:00 | 22:00 |
| 16:00 | 00:00 |
| 18:00 | 02:00 |
| 20:00 | 04:00 |
| 22:00 | 06:00 |
| 00:00 | 08:00 |
| 02:00 | 10:00 |
| 04:00 | 12:00 |
| 06:00 | 14:00 |
| 08:00 | 16:00 |
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 AKST Time Conversion
Converting time between Singapore Standard Time (SGT) and Alaska Standard Time (AKST) covers a 17-hour gap. SGT is UTC+8 year-round, while AKST is UTC-9, putting Singapore 17 hours ahead of Alaska in winter. Any Singapore daytime call lands on the previous calendar day in Anchorage.
This time zone converter uses the IANA timezone database to ensure accurate calculations. AKST runs from the first Sunday in November to the second Sunday in March. During the rest of the year Alaska is on AKDT (UTC-8) and the gap narrows to 16 hours. Singapore never observes daylight saving, so seasonal variation comes purely from the Alaska side. Whether you're scheduling winter calls with Alaska partners or coordinating cross-Pacific operations, our converter clarifies the dateline math.
Common Use Cases for SGT to AKST Conversion
Business & Work
- Scheduling winter calls between Singapore and Alaska offices
- Coordinating seafood, oil and gas, or shipping operations across the North Pacific
- Planning conference calls with Anchorage partners during AKST months
Personal & Travel
- Planning winter travel from Singapore to Alaska
- Coordinating with family and friends in Anchorage, Juneau or Fairbanks
- Scheduling virtual events bridging Southeast Asia and Alaska
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
Alaska Standard Time (AKST)
- UTC Offset: UTC-9
- IANA Timezone: America/Anchorage
- Daylight Saving: Switches to AKDT (UTC-8) from second Sunday in March to first Sunday in November
- Major Cities: Anchorage, Juneau, Fairbanks, Sitka, Wasilla
- Coverage: Most of the state of Alaska during standard time months
Quick Reference: SGT to AKST
Remember: AKST is 17 hours behind SGT. During AKDT (March to November) the offset shrinks to 16 hours. Always note the date — Singapore daytimes land on the previous Alaskan calendar day.
Frequently Asked Questions
What is the time difference between SGT and AKST?
Singapore Standard Time (SGT) is UTC+8, while Alaska Standard Time (AKST) is UTC-9. SGT is 17 hours ahead of AKST. When it is 12:00 PM in Singapore, it is 7:00 PM the previous day in Anchorage.
When is AKST in effect?
AKST applies from the first Sunday in November to the second Sunday in March. Outside that window Alaska is on AKDT (UTC-8) and the gap to SGT is 16 hours.
Does Singapore observe daylight saving time?
No. Singapore stays on SGT (UTC+8) year-round. All variation in the SGT-AKST offset is caused by Alaska shifting between AKST and AKDT.
What are the best times for SGT-AKST business calls?
The 17-hour gap leaves a narrow overlap. Singapore late evening (9:00 to 11:00 PM SGT) reaches Alaskan morning (4:00 to 6:00 AM AKST). For a more reasonable Alaska time, early Singapore morning (7:00 to 9:00 AM SGT) maps to the previous Alaska afternoon (2:00 to 4:00 PM AKST).
Which countries or regions use AKST?
AKST covers most of the state of Alaska in winter. Major cities include Anchorage, Juneau, Fairbanks, Sitka and Wasilla. The far-western Aleutian Islands use HST instead.
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
- • AKST is 17 hours behind SGT — subtract 17 hours from Singapore time to get Alaska time in winter.
- • Always check the date. A Singapore daytime call almost always lands on the previous Alaska calendar day.
- • During AKDT (March to November) the offset becomes 16 hours. Verify Alaska time near the November and March transitions.
- • Late Singapore evenings or very early mornings are the only windows that hit Alaskan business hours.
- • Use IANA identifiers Asia/Singapore and America/Anchorage in calendars to handle the AKST/AKDT switch automatically.
- • A 17-hour gap is actually a clean handoff for asynchronous work — end of day in one office becomes start of day in the other.