WIB to NST
-10h 30mWIB
WIBSOURCENST
NSTGreen rows indicate typical business hours (9 AM - 5 PM)
WIB and NST on the World Map
The map below highlights the WIB (Western Indonesia Time) and NST (Newfoundland 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.
NST – Newfoundland Standard Time
UTC-03:30Newfoundland Standard Time (NST) is a unique half-hour offset time zone in Canada, 3.5 hours behind UTC.
- •NST is one of only a few half-hour offset time zones in the world.
- •Newfoundland joined Canada in 1949 and kept its unique time zone.
- •St. John's is the easternmost city in North America.
WIB to NST Time Difference – Complete Guide
WIB runs on Western Indonesia Time (WIB) at UTC+07:00. NST runs on Newfoundland Standard Time (NST) at UTC-03:30. That puts WIB 10 hours 30 minutes behind NST — a difference of -10h 30m at the current offsets.
In practice, when it is 9:00 AM in WIB it is 10:30 PM in NST on the previous day. Midnight in WIB is 1:30 PM in NST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
WIB to NST time conversion table
| WIB (WIB) | NST (NST) | Day |
|---|---|---|
| 12:00 AM | 1:30 PM | previous day |
| 6:00 AM | 7:30 PM | previous day |
| 7:00 AM | 8:30 PM | previous day |
| 8:00 AM | 9:30 PM | previous day |
| 9:00 AM | 10:30 PM | previous day |
| 12:00 PM | 1:30 AM | same day |
| 3:00 PM | 4:30 AM | same day |
| 5:00 PM | 6:30 AM | same day |
| 6:00 PM | 7:30 AM | same day |
| 9:00 PM | 10:30 AM | same day |
Why people convert WIB to NST time
- Scheduling a call from WIB to NST: a 10:00 AM start in WIB lands at 11:30 PM in NST the previous day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -10h 30m gap: WIB and NST 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 NST is 10:30 PM in WIB.
- Watching a live event or market open: WIB viewers need 10:30 PM in NST to catch a 9:00 AM start there, and 10:30 AM if the event is anchored to WIB.
- Always state the zone abbreviation, not just the hour. "3:00 PM WIB" is unambiguous; "3 PM" across a -10h 30m gap is not.
- With a -10h 30m gap there is no shared 9-to-5 window, so alternate the early start: one week WIB takes the early slot, the next week NST 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 NST (Newfoundland Standard Time)
Newfoundland Standard Time (NST) is one of the few half-hour offset time zones in the world. It covers the island of Newfoundland in Canada and is 30 minutes ahead of Atlantic Standard Time. This unique offset exists because Newfoundland was an independent country until 1949.
Best time to call between WIB and NST
With a -10h 30m offset there is no overlap inside a normal 9 AM – 5 PM day. NST opens at 9:00 AM NST, which is 10:30 PM in WIB, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
WIB and NST have no shared working hours because of the -10h 30m gap. Teams need to alternate early starts or rely on asynchronous handovers.
WIB is 10 hours 30 minutes behind NST (WIB UTC+07:00 → NST UTC-03:30). 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
NST
☀ Currently in DST
Standard: UTC-03:30 · DST: UTC-02:30
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 NST?
WIB (WIB, UTC+07:00) is 10 hours 30 minutes behind NST (NST, UTC-03:30). The gap is currently -10h 30m.
How do I convert WIB time to NST time?
Add -10h 30m to WIB local time. For example, 9:00 AM in WIB is 10:30 PM in NST (previous day).
What time is it in NST right now?
NST uses NST at UTC-03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -10h 30m offset from WIB.
What is the best time to call NST from WIB?
There is no shared working-hours window because of the -10h 30m gap. The closest option is 1:00 PM in WIB, which is 2:30 AM in NST.
Which is behind, WIB or NST?
WIB is 10 hours 30 minutes behind NST. When it is 12:00 PM in WIB it is 1:30 AM in NST.
Does daylight saving time affect the WIB–NST difference?
Neither zone observes daylight saving time, so the -10h 30m offset between WIB and NST is fixed all year.
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 NST?
Not normally. The -10h 30m gap only pushes the date over the previous day.
What is the time difference between WIB and NST?
NST is -10h 30m from WIB.
What timezone is WIB in?
WIB operates on its local timezone.
What timezone is NST in?
NST operates on its local timezone.
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 NST timezone?
Major cities in the NST timezone include St. John's, Corner Brook, Mount Pearl.
What is the UTC offset for NST?
Newfoundland Standard Time (NST) is at UTC-03:30. During daylight saving time, it shifts to NDT.
What should I know about the NST timezone?
NST is one of only a few half-hour offset time zones in the world. Newfoundland joined Canada in 1949 and kept its unique time zone.
When is it midnight in WIB, what time is it in NST?
When it is 12:00 AM (midnight) in WIB (WIB), it is -10h 30m later in NST (NST).
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