WIB to Anchorage
-15hWIB
WIBSOURCEAnchorage
AKDTGreen rows indicate typical business hours (9 AM - 5 PM)
WIB and AKDT on the World Map
The map below highlights the WIB (Western Indonesia Time) and AKDT (Alaska Standard Time) timezone regions across the globe.
WIB – Western Indonesia Time
UTC+07:00Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.
- •Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
- •Indonesia has not observed daylight saving time since 1964.
- •Jakarta is the largest city in Southeast Asia by population.
- •WIB shares the UTC+07:00 offset with Indochina Time.
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 Anchorage
WikipediaAnchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
Moose occasionally wander through the city streets.
Understanding the -15h Gap: WIB vs Anchorage
WIB runs on Western Indonesia Time (WIB) at UTC+07:00. Anchorage runs on Alaska Daylight Time (AKDT) at UTC-08:00, also currently on daylight saving time. That puts WIB 15 hours behind Anchorage — a difference of -15h at the current offsets.
In practice, when it is 9:00 AM in WIB it is 6:00 PM in Anchorage on the previous day. Midnight in WIB is 9:00 AM in Anchorage.Anchorage observes daylight saving time while WIB does not, so the gap narrows or widens by an hour part of the year.
WIB to Anchorage time conversion table
| WIB (WIB) | Anchorage (AKDT) | Day |
|---|---|---|
| 12:00 AM | 9:00 AM | previous day |
| 6:00 AM | 3:00 PM | previous day |
| 7:00 AM | 4:00 PM | previous day |
| 8:00 AM | 5:00 PM | previous day |
| 9:00 AM | 6:00 PM | previous day |
| 12:00 PM | 9:00 PM | previous day |
| 3:00 PM | 12:00 AM | same day |
| 5:00 PM | 2:00 AM | same day |
| 6:00 PM | 3:00 AM | same day |
| 9:00 PM | 6:00 AM | same day |
Why people convert WIB to Anchorage time
- Scheduling a call from WIB to Anchorage: a 10:00 AM start in WIB lands at 7:00 PM in Anchorage the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -15h gap: WIB and Anchorage 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 Anchorage is 6:00 PM in WIB.
- Booking travel or deliveries: tracking Anchorage local time against WIB keeps pickup windows and arrival estimates honest across the -15h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -15h gap is not.
- With a -15h gap there is no shared 9-to-5 window, so alternate the early start: one week WIB takes the early slot, the next week Anchorage does.
- Anchorage: Clocks fall back on Sun, Nov 1, 2026. Any meeting series spanning that date will shift by an hour in local time.
About WIB (Western Indonesia Time)
Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.
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 WIB and Anchorage
With a -15h offset there is no overlap inside a normal 9 AM – 5 PM day. Anchorage opens at 9:00 AM AKDT, which is 6:00 PM in WIB, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
WIB and Anchorage have no shared working hours because of the -15h gap. Teams need to alternate early starts or rely on asynchronous handovers.
WIB is 15 hours behind Anchorage (WIB UTC+07:00 → AKDT UTC-08:00). 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
WIB
Does not observe DST
Anchorage
☀ 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 WIB and Anchorage?
WIB (WIB, UTC+07:00) is 15 hours behind Anchorage (AKDT, UTC-08:00). The gap is currently -15h.
How do I convert WIB time to Anchorage time?
Add -15h to WIB local time. For example, 9:00 AM in WIB is 6:00 PM in Anchorage (previous day).
What time is it in Anchorage right now?
Anchorage uses AKDT at UTC-08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -15h offset from WIB.
What is the best time to call Anchorage from WIB?
There is no shared working-hours window because of the -15h gap. The closest option is 1:00 PM in WIB, which is 10:00 PM in Anchorage.
Which is behind, WIB or Anchorage?
WIB is 15 hours behind Anchorage. When it is 12:00 PM in WIB it is 9:00 PM in Anchorage.
Do WIB and Anchorage use different time zones?
WIB uses WIB at UTC+07:00, while Anchorage (USA) uses AKDT at UTC-08:00. The IANA identifiers are Asia/Jakarta and America/Anchorage.
Does daylight saving time affect the WIB–Anchorage difference?
Yes at the moment: Anchorage is on daylight saving time and WIB is not, so the -15h gap shifts by an hour when exactly one of them changes clocks.
Which other cities share WIB's time zone?
WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.
Which countries use WIB, WIB's zone?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Is there a day difference between WIB and Anchorage?
Sometimes. The -15h gap is large enough that 8:00 PM or later in WIB already falls on the in Anchorage.
What is the time difference between WIB and Anchorage?
Anchorage is -15h from WIB.
What timezone is WIB in?
WIB operates on its local timezone.
What timezone is Anchorage in?
Anchorage operates on Alaska Time (AKST/AKDT), UTC-9. As a global air cargo hub, Anchorage connects Asian and American markets via polar routes.
What are the business hours in Anchorage?
Standard business hours in Anchorage are 8:00 AM - 5:00 PM AKST.
Which countries use WIB (Western Indonesia Time)?
WIB is used in Indonesia (Java, Sumatra, West Kalimantan).
Does WIB observe daylight saving time?
No, WIB does not observe daylight saving time and remains at UTC+07:00 year-round.
What are some interesting facts about WIB?
Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00). Indonesia has not observed daylight saving time since 1964.
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 WIB, what time is it in Anchorage?
When it is 12:00 AM (midnight) in WIB (WIB), it is -15h later in Anchorage (AKST).
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