JST to NST Converter
Time Difference
Japan Standard Time is 11 hours and 30 minutes ahead of Newfoundland Daylight Time
10:30 am10:30 in JST is 11:00 pm23:00 in NDT
JST to NST call time
Best time for a conference call or a meeting is between 7pm-9pm in JST which corresponds to 6:30am-8:30am in NST
10:30 am10:30 Japan Standard Time (JST). Offset UTC +9:00 hours
11:00 pm23:00 Newfoundland Daylight Time (NDT). Offset UTC -2:30 hours
10:30 am10:30 JST / 11:00 pm23:00 NDT
JST | NDT |
---|---|
12am (midnight) | 12:30 pm |
1am | 1:30 pm |
2am | 2:30 pm |
3am | 3:30 pm |
4am | 4:30 pm |
5am | 5:30 pm |
6am | 6:30 pm |
7am | 7:30 pm |
8am | 8:30 pm |
9am | 9:30 pm |
10am | 10:30 pm |
11am | 11:30 pm |
12pm (noon) | 12:30 am |
1pm | 1:30 am |
2pm | 2:30 am |
3pm | 3:30 am |
4pm | 4:30 am |
5pm | 5:30 am |
6pm | 6:30 am |
7pm | 7:30 am |
8pm | 8:30 am |
9pm | 9:30 am |
10pm | 10:30 am |
11pm | 11:30 am |
0:00 | 12:30 |
1:00 | 13:30 |
2:00 | 14:30 |
3:00 | 15:30 |
4:00 | 16:30 |
5:00 | 17:30 |
6:00 | 18:30 |
7:00 | 19:30 |
8:00 | 20:30 |
9:00 | 21:30 |
10:00 | 22:30 |
11:00 | 23:30 |
12:00 | 0:30 |
13:00 | 1:30 |
14:00 | 2:30 |
15:00 | 3:30 |
16:00 | 4:30 |
17:00 | 5:30 |
18:00 | 6:30 |
19:00 | 7:30 |
20:00 | 8:30 |
21:00 | 9:30 |
22:00 | 10:30 |
23:00 | 11:30 |
Japan Standard Time
Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: Japan
Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo
Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Japan Standard Time remains the same

JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates nine hour and zero minutes time differences to the east of the zero meridian.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time
Newfoundland Standard Time
Offset: NST is 3 hours and 30 minutes behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada
Principal Cities: The largest city in the NST timezone is St Johns from Canada with population about 99,182 people. Other major cities in the area are Mount Pearl, Corner Brook, Conception Bay South
French: HNT - Heure Normale de Terre-Neuve

Daylight Saving: This is a standard time zone, however during summer some places switch clocks for one hour forward when daylight saving comes into effect and observe Newfoundland Daylight Time (NDT).
End: Newfoundland Standard Time (NST) has ended on Sunday, March 9, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 9, 2025, 3:00 am local daylight time instead. Standard time ends annually the on second Sunday of March.
Start: Newfoundland Standard Time (NST) starts on Sunday, November 2, 2025 at 2:00 am local time and clocks are set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually the on first Sunday of November.
NST representations, usage and related time zones
- -0330 - basic
- -03:30 - extended
- -0330 - sign character (-) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates three hour and thirty minutes time differences to the west of the zero meridian.
- America/St_Johns
- Canada/Newfoundland