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Jakarta to AKST

-16h

Jakarta

WIBSOURCE
Indonesia · UTC+07:00
HH12
:
MM00
  
12:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM

AKST

AKST
UTC-08:00☀ DST active
HH08
:
MM00
  
(previous day)20:00 (24-hr)
12 AM6 AM12 PM6 PM12 AM
Jakarta
AKST
12:00 AM
9:00 AM-1
2:00 AM
11:00 AM-1
4:00 AM
1:00 PM-1
6:00 AM
3:00 PM-1
8:00 AM
5:00 PM-1
10:00 AM
7:00 PM-1
12:00 PM
9:00 PM-1
2:00 PM
11:00 PM-1
4:00 PM
1:00 AM
6:00 PM
3:00 AM
8:00 PM
5:00 AM
10:00 PM
7:00 AM

Green rows indicate typical business hours (9 AM - 5 PM)

WIB and AKST on the World Map

The map below highlights the WIB (Western Indonesia Time) and AKST (Alaska Standard Time) timezone regions across the globe.

WIBAKSTJakartaSurabayaBandungMedanAnchorageFairbanksJuneauSitka
WIB Zone
→
AKST Zone

Explore all world timezones interactively →

WIB – Western Indonesia Time

UTC+07:00

Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.

Countries in WIB
Indonesia (Java, Sumatra, West Kalimantan)
Major Cities in WIB
JakartaSurabayaBandungMedanPalembang
Key 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.
  • •Jakarta is the largest city in Southeast Asia by population.
  • •WIB shares the UTC+07:00 offset with Indochina Time.
Daylight Saving:No – UTC+07:00 year-round
Learn more about WIB on Wikipedia

AKST – Alaska Standard Time

UTC-09:00

Alaska Standard Time (AKST) is the time zone for the state of Alaska, 9 hours behind UTC.

Countries in AKST
United States (Alaska)
Major Cities in AKST
AnchorageFairbanksJuneauSitkaWasilla
Key Facts about AKST
  • •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.
Daylight Saving:Yes – switches to AKDT
Learn more about AKST on Wikipedia

About Jakarta

Wikipedia

Jakarta operates on Western Indonesia Time (WIB), UTC+7. As Southeast Asia's largest economy, Jakarta's IDX is a key emerging market exchange.

Population:10.5 million
Metro:34.5 million
Business Hours:8:00 AM - 5:00 PM WIB
Currency:IDR (Rp)
Stock Exchange:IDX (Indonesia Stock Exchange)
Key Landmarks
MonasIstiqlal MosqueOld Town (Kota Tua)Taman MiniAncol Dreamland
Did You Know?

Indonesia has 3 time zones; Jakarta uses Western Indonesia Time (WIB).

Learn more about WIB timezone →

Comparing Time Zones: Jakarta and AKST

Jakarta runs on Western Indonesia Time (WIB) at UTC+07:00. AKST runs on Alaska Standard Time (AKST) at UTC-09:00. That puts Jakarta 16 hours behind AKST — a difference of -16h at the current offsets.

In practice, when it is 9:00 AM in Jakarta it is 5:00 PM in AKST on the previous day. Midnight in Jakarta is 8:00 AM in AKST. Neither zone observes daylight saving time, so the offset between them stays constant all year.

Jakarta to AKST time conversion table

Jakarta (WIB)AKST (AKST)Day
12:00 AM8:00 AMprevious day
6:00 AM2:00 PMprevious day
7:00 AM3:00 PMprevious day
8:00 AM4:00 PMprevious day
9:00 AM5:00 PMprevious day
12:00 PM8:00 PMprevious day
3:00 PM11:00 PMprevious day
5:00 PM1:00 AMsame day
6:00 PM2:00 AMsame day
9:00 PM5:00 AMsame day

Why people convert Jakarta to AKST time

  • Scheduling a call from Jakarta to AKST: a 10:00 AM start in Jakarta lands at 6:00 PM in AKST the previous day, so you can confirm the slot without doing the arithmetic yourself.
  • Handling a -16h gap: Jakarta 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 5:00 PM in Jakarta.
  • Watching a live event or market open: Jakarta viewers need 5:00 PM in AKST to catch a 9:00 AM start there, and 4:00 PM if the event is anchored to Jakarta.
  • Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -16h gap is not.
  • With a -16h gap there is no shared 9-to-5 window, so alternate the early start: one week Jakarta takes the early slot, the next week AKST does.

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 Jakarta and AKST

With a -16h offset there is no overlap inside a normal 9 AM – 5 PM day. AKST opens at 9:00 AM AKST, which is 5:00 PM in Jakarta, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

Jakarta and AKST have no shared working hours because of the -16h gap. Teams need to alternate early starts or rely on asynchronous handovers.

Jakarta is 16 hours behind AKST (WIB UTC+07:00 → 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

Jakarta

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:

⏳
History of Timekeeping
From sundials to atomic clocks - 5000 years of measuring time
🌍
How Time Zones Work
UTC, offsets, and why zones don't follow straight lines
☀️
Daylight Saving Time
DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between Jakarta and AKST?

Jakarta (WIB, UTC+07:00) is 16 hours behind AKST (AKST, UTC-09:00). The gap is currently -16h.

How do I convert Jakarta time to AKST time?

Add -16h to Jakarta local time. For example, 9:00 AM in Jakarta is 5:00 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 -16h offset from Jakarta.

What is the best time to call AKST from Jakarta?

There is no shared working-hours window because of the -16h gap. The closest option is 1:00 PM in Jakarta, which is 9:00 PM in AKST.

Which is behind, Jakarta or AKST?

Jakarta is 16 hours behind AKST. When it is 12:00 PM in Jakarta it is 8:00 PM in AKST.

Do Jakarta and AKST use different time zones?

Jakarta (Indonesia) uses WIB at UTC+07:00, while AKST uses AKST at UTC-09:00. The IANA identifiers are Asia/Jakarta and America/Anchorage.

Does daylight saving time affect the Jakarta–AKST difference?

Neither zone observes daylight saving time, so the -16h offset between Jakarta and AKST is fixed all year.

Which other cities share Jakarta's time zone?

WIB also covers Jakarta, Surabaya, Bandung, Medan, Palembang.

Which countries use WIB, Jakarta's zone?

WIB is used in Indonesia (Java, Sumatra, West Kalimantan).

Is there a day difference between Jakarta and AKST?

Sometimes. The -16h gap is large enough that 8:00 PM or later in Jakarta already falls on the in AKST.

What is the time difference between Jakarta and AKST?

AKST is -16h from Jakarta.

What timezone is Jakarta in?

Jakarta operates on Western Indonesia Time (WIB), UTC+7. As Southeast Asia's largest economy, Jakarta's IDX is a key emerging market exchange.

What timezone is AKST in?

AKST operates on its local timezone.

What are the business hours in Jakarta?

Standard business hours in Jakarta are 8:00 AM - 5:00 PM WIB.

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 Jakarta, what time is it in AKST?

When it is 12:00 AM (midnight) in Jakarta (WIB), it is -16h later in AKST (AKST).

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