Colombo to AKST
-14h 30mColombo
ISTSOURCEAKST
AKSTGreen rows indicate typical business hours (9 AM - 5 PM)
IST and AKST on the World Map
The map below highlights the IST (India Standard Time) and AKST (Alaska Standard Time) timezone regions across the globe.
IST – India Standard Time
UTC+05:30India Standard Time (IST) is the time zone for India and Sri Lanka, 5 hours and 30 minutes ahead of UTC.
- •India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT.
- •India uses a single time zone despite spanning 30° of longitude.
- •IST is one of only a handful of time zones with a 30-minute offset.
- •IST is the most populous single time zone in the world with over 1.4 billion people.
- •The Bombay Stock Exchange (BSE) and National Stock Exchange (NSE) operate on IST.
AKST – Alaska Standard Time
UTC-09:00Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.
- •Alaska is the largest US state by area but has only about 730,000 residents.
- •Anchorage is the most populous city in AKST with about 290,000 people.
- •The Aleutian Islands use HAST instead of AKST.
About Colombo
WikipediaColombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
Sri Lanka Standard Time (SLST) uses UTC+5:30, same offset as India.
Colombo vs AKST: Offsets, DST and Best Call Times
Colombo runs on India Standard Time (IST) at UTC+05:30. AKST runs on Alaska Standard Time (AKST) at UTC-09:00. That puts Colombo 14 hours 30 minutes behind AKST — a difference of -14h 30m at the current offsets.
In practice, when it is 9:00 AM in Colombo it is 6:30 PM in AKST on the previous day. Midnight in Colombo is 9:30 AM in AKST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Colombo to AKST time conversion table
| Colombo (IST) | AKST (AKST) | Day |
|---|---|---|
| 12:00 AM | 9:30 AM | previous day |
| 6:00 AM | 3:30 PM | previous day |
| 7:00 AM | 4:30 PM | previous day |
| 8:00 AM | 5:30 PM | previous day |
| 9:00 AM | 6:30 PM | previous day |
| 12:00 PM | 9:30 PM | previous day |
| 3:00 PM | 12:30 AM | same day |
| 5:00 PM | 2:30 AM | same day |
| 6:00 PM | 3:30 AM | same day |
| 9:00 PM | 6:30 AM | same day |
Why people convert Colombo to AKST time
- Scheduling a call from Colombo to AKST: a 10:00 AM start in Colombo lands at 7:30 PM in AKST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -14h 30m gap: Colombo and AKST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in AKST is 6:30 PM in Colombo.
- Keeping family and friends in sync: knowing that 8:00 PM in Colombo is 5:30 AM in AKST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM IST" is unambiguous; "3 PM" across a -14h 30m gap is not.
- With a -14h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week Colombo takes the early slot, the next week AKST does.
About IST (India Standard Time)
India Standard Time (IST) is the time observed throughout India and Sri Lanka. It is based on the 82.5°E meridian, passing through Mirzapur in Uttar Pradesh. India uses a single time zone despite spanning roughly 30° of longitude, which has been debated. IST does not observe daylight saving time. India is the world's most populous country, making IST one of the most-used time zones globally. The IT outsourcing industry and call centers operate primarily on IST, making the EST-to-IST conversion one of the most searched timezone conversions.
About AKST (Alaska Standard Time)
Alaska Standard Time (AKST) is used in nearly all of Alaska. Due to Alaska's vast geographic size, the Aleutian Islands use Hawaii-Aleutian Standard Time instead. During summer months, Alaska switches to Alaska Daylight Time (AKDT, UTC-08:00).
Best time to call between Colombo and AKST
With a -14h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. AKST opens at 9:00 AM AKST, which is 6:30 PM in Colombo, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
Colombo and AKST have no shared working hours because of the -14h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
Colombo is 14 hours 30 minutes behind AKST (IST UTC+05:30 → AKST UTC-09:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Colombo
Does not observe DST
AKST
☀ Currently in DST
Standard: UTC-09:00 · DST: UTC-08:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Colombo and AKST?
Colombo (IST, UTC+05:30) is 14 hours 30 minutes behind AKST (AKST, UTC-09:00). The gap is currently -14h 30m.
How do I convert Colombo time to AKST time?
Add -14h 30m to Colombo local time. For example, 9:00 AM in Colombo is 6:30 PM in AKST (previous day).
What time is it in AKST right now?
AKST uses AKST at UTC-09:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -14h 30m offset from Colombo.
What is the best time to call AKST from Colombo?
There is no shared working-hours window because of the -14h 30m gap. The closest option is 1:00 PM in Colombo, which is 10:30 PM in AKST.
Which is behind, Colombo or AKST?
Colombo is 14 hours 30 minutes behind AKST. When it is 12:00 PM in Colombo it is 9:30 PM in AKST.
Do Colombo and AKST use different time zones?
Colombo (Sri Lanka) uses IST at UTC+05:30, while AKST uses AKST at UTC-09:00. The IANA identifiers are Asia/Colombo and America/Anchorage.
Does daylight saving time affect the Colombo–AKST difference?
Neither zone observes daylight saving time, so the -14h 30m offset between Colombo and AKST is fixed all year.
Which other cities share Colombo's time zone?
IST also covers Mumbai, Delhi, Bangalore, Kolkata, Chennai, Hyderabad, Pune, Ahmedabad and 4 more.
Which countries use IST, Colombo's zone?
IST is used in India, Sri Lanka.
Is there a day difference between Colombo and AKST?
Sometimes. The -14h 30m gap is large enough that 8:00 PM or later in Colombo already falls on the in AKST.
What is the time difference between Colombo and AKST?
AKST is -14h 30m from Colombo.
What timezone is Colombo in?
Colombo operates on Sri Lanka Time (SLST), UTC+5:30. Sharing India's timezone, Colombo is a key South Asian trade and tourism hub.
What timezone is AKST in?
AKST operates on its local timezone.
What are the business hours in Colombo?
Standard business hours in Colombo are 9:00 AM - 5:00 PM IST.
Which countries use IST (India Standard Time)?
IST is used in India, Sri Lanka.
Does IST observe daylight saving time?
No, IST does not observe daylight saving time and remains at UTC+05:30 year-round.
What are some interesting facts about IST?
India is 10 hours 30 minutes ahead of EST and 5 hours 30 minutes ahead of GMT. India uses a single time zone despite spanning 30° of longitude.
Which cities are in the AKST timezone?
Major cities in the AKST timezone include Anchorage, Fairbanks, Juneau, Sitka, Wasilla.
What is the UTC offset for AKST?
Alaska Standard Time (AKST) is at UTC-09:00. During daylight saving time, it shifts to AKDT.
What should I know about the AKST timezone?
Alaska is the largest US state by area but has only about 730,000 residents. Anchorage is the most populous city in AKST with about 290,000 people.
When is it midnight in Colombo, what time is it in AKST?
When it is 12:00 AM (midnight) in Colombo (IST), it is -14h 30m later in AKST (AKST).
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