Convert any time between WIB and AKST, with a full 24-hour table and the hours when both sides are actually at work.

WIB to AKST Time Converter

AKST is 15 hours behind WIB. WIB is UTC+7:00, and Alaska is currently on AKDT (UTC-8:00).

Worth knowing right now. Alaska is currently on AKDT, not AKST, because daylight saving is in effect. The 15 hours above is the gap between those two regions today, which is almost certainly what you want. Taken strictly as written, WIB to AKST is 16 hours.
WIB
Western Indonesian Time
09:17:59 PM
Sunday, October 11, 2026
UTC+7:00
-15:00
hours difference
⇆ Reverse
AKST
Alaska Standard Time
06:17:59 AM
Sunday, October 11, 2026
UTC-8:00

Best Time to Call Between WIB and AKST

Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 1:00 PM WIB, which is 4:00 PM to 10:00 PM AKST.

both at work WIB only AKST only neither  —  hours along the strip are WIB.

WIB to AKST: Full 24-Hour Conversion Table

Shaded rows are working hours; the darker shade marks the hours when both zones are at work.

WIBAKSTWorking hours
12:00 AM 9:00 AM prev day AKST only
1:00 AM 10:00 AM prev day AKST only
2:00 AM 11:00 AM prev day AKST only
3:00 AM 12:00 PM prev day AKST only
4:00 AM 1:00 PM prev day AKST only
5:00 AM 2:00 PM prev day AKST only
6:00 AM 3:00 PM prev day AKST only
7:00 AM 4:00 PM prev day AKST only
8:00 AM 5:00 PM prev day —
9:00 AM 6:00 PM prev day WIB only
10:00 AM 7:00 PM prev day WIB only
11:00 AM 8:00 PM prev day WIB only
12:00 PM 9:00 PM prev day WIB only
1:00 PM 10:00 PM prev day WIB only
2:00 PM 11:00 PM prev day WIB only
3:00 PM 12:00 AM WIB only
4:00 PM 1:00 AM WIB only
5:00 PM 2:00 AM —
6:00 PM 3:00 AM —
7:00 PM 4:00 AM —
8:00 PM 5:00 AM —
9:00 PM 6:00 AM —
10:00 PM 7:00 AM —
11:00 PM 8:00 AM —

What WIB and AKST Actually Are

WIB — Western Indonesian Time

Jakarta, Surabaya, Bandung, Medan. Standing at UTC+7:00 as written, and the region does not change its clocks, so that offset holds all year. Indonesia spans three zones: WIB (UTC+7), WITA (UTC+8) and WIT (UTC+9).

Indonesia spans three time zones. A long-running proposal to unify the country onto a single clock has repeatedly stalled.

AKST — Alaska Standard Time

Anchorage, Fairbanks, Juneau. Standing at UTC-9:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to AKST.

Alaska compressed four time zones into one in 1983, moving most of the state onto a single clock to keep business hours aligned with the rest of the country.

What This Means in Practice

The date changes mid-working-day

For 6 of the eight hours in a normal WIB working day, the equivalent AKST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.

This gap is not fixed

AKST changes its clocks and WIB does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.

Nearly opposite sides of the clock

At 15 hours apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.

Frequently Asked Questions

What is the time difference between WIB and AKST?

AKST is 15 hours behind WIB. That is the live figure. Taken strictly as written, the gap between WIB and AKST is 16 hours — the two differ because at least one of these regions is currently on daylight saving.

What is 9:00 AM WIB in AKST?

9:00 AM WIB is 6:00 PM the previous day AKST.

What are the best hours to schedule a call between WIB and AKST?

Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 7:00 AM to 1:00 PM WIB, which is 4:00 PM to 10:00 PM AKST.

Does the difference between WIB and AKST change during the year?

Yes. AKST observes daylight saving and WIB does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.

Does WIB always mean Western Indonesian Time?

Indonesia spans three zones: WIB (UTC+7), WITA (UTC+8) and WIT (UTC+9).

Converting between two time zones regularly? Bookmark this page — the clocks update live and the table follows daylight saving automatically.