WIB to AST converter

Western Indonesia Time (Jakarta) to Atlantic Time (Halifax).

WIB7:07 AMSat 31 Oct 2026

→

AST9:07 PMFri 30 Oct 2026

AST is 10 h behind WIB.

Pick a time in WIB

⇄ AST to WIB

9:00 AM WIB = 11:00 PM AST previous day

Best time to meet

No hour falls inside 9 AM to 5 PM in both places. The least painful: around 7:00 PM WIB, which is 9:00 AM AST.

WIB to AST time table

For 31 Oct 2026. Green rows: both sides between 9 AM and 5 PM.

WIB	AST
12:00 AM WIB	2:00 PM AST previous day
1:00 AM WIB	3:00 PM AST previous day
2:00 AM WIB	4:00 PM AST previous day
3:00 AM WIB	5:00 PM AST previous day
4:00 AM WIB	6:00 PM AST previous day
5:00 AM WIB	7:00 PM AST previous day
6:00 AM WIB	8:00 PM AST previous day
7:00 AM WIB	9:00 PM AST previous day
8:00 AM WIB	10:00 PM AST previous day
9:00 AM WIB	11:00 PM AST previous day
10:00 AM WIB	12:00 AM AST
11:00 AM WIB	1:00 AM AST
12:00 PM WIB	2:00 AM AST
1:00 PM WIB	3:00 AM AST
2:00 PM WIB	4:00 AM AST
3:00 PM WIB	5:00 AM AST
4:00 PM WIB	6:00 AM AST
5:00 PM WIB	7:00 AM AST
6:00 PM WIB	8:00 AM AST
7:00 PM WIB	9:00 AM AST
8:00 PM WIB	10:00 AM AST
9:00 PM WIB	11:00 AM AST
10:00 PM WIB	12:00 PM AST
11:00 PM WIB	1:00 PM AST

Quick answers

9:00 AM WIB = 11:00 PM AST (previous day)
12:00 PM WIB = 2:00 AM AST
3:00 PM WIB = 5:00 AM AST
5:00 PM WIB = 7:00 AM AST
9:00 AM AST = 7:00 PM WIB
12:00 PM AST = 10:00 PM WIB
5:00 PM AST = 3:00 AM WIB (next day)

Does the gap change during the year?

Yes, because of daylight saving. Until 1 Nov 2026: AST is 10 h behind WIB. From 1 Nov 2026 to 14 Mar 2027: AST is 11 h behind WIB. From 14 Mar 2027 to 7 Nov 2027: AST is 10 h behind WIB.

WIB does not change its clocks. AST next changes its clocks on 1 Nov 2026 (back 1 h, to UTC−4), then on 14 Mar 2027 (forward 1 h, to UTC−3).

About WIB and AST

WIB here means Western Indonesia Time, the clock in Jakarta. Right now it is UTC+7. It has no daylight saving.

AST here means Atlantic Time, the clock in Halifax. Right now it is UTC−3. Strictly, AST is the winter name; in summer these places use ADT. This page follows their real clock all year.

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