JST to IST to CET to PST
Time Difference
Japan Standard Time is 3 hours and 30 minutes ahead of India Standard Time and 7 hours ahead of Central European Summer Time and 16 hours ahead of Pacific Daylight Time
4:30 am04:30 in JST is 1:00 am01:00 in IST and is 9:30 pm21:30 in CEST and is 12:30 pm12:30 in PDT
JST to IST call time
Best time for a conference call or a meeting is between 11:30am-6pm in JST which corresponds to 8am-2:30pm in IST
JST to CET call time
Best time for a conference call or a meeting is between 4pm-6pm in JST which corresponds to 8am-10am in CET
JST to PST call time
Best time for a conference call or a meeting is between 9:30pm-11:30pm in JST which corresponds to 4:30am-6:30am in PST
4:30 am04:30 Japan Standard Time (JST). Offset UTC +9:00 hours
1:00 am01:00 India Standard Time (IST). Offset UTC +5:30 hours
9:30 pm21:30 Central European Summer Time (CEST). Offset UTC +2:00 hours
12:30 pm12:30 Pacific Daylight Time (PDT). Offset UTC -7:00 hours
4:30 am04:30 JST / 1:00 am01:00 IST / 9:30 pm21:30 CEST / 12:30 pm12:30 PDT
| JST | IST | CEST | PDT |
|---|---|---|---|
| 12am (midnight) | 8:30 pm | 5pm | 8am |
| 1am | 9:30 pm | 6pm | 9am |
| 2am | 10:30 pm | 7pm | 10am |
| 3am | 11:30 pm | 8pm | 11am |
| 4am | 12:30 am | 9pm | 12pm (noon) |
| 5am | 1:30 am | 10pm | 1pm |
| 6am | 2:30 am | 11pm | 2pm |
| 7am | 3:30 am | 12am (midnight) | 3pm |
| 8am | 4:30 am | 1am | 4pm |
| 9am | 5:30 am | 2am | 5pm |
| 10am | 6:30 am | 3am | 6pm |
| 11am | 7:30 am | 4am | 7pm |
| 12pm (noon) | 8:30 am | 5am | 8pm |
| 1pm | 9:30 am | 6am | 9pm |
| 2pm | 10:30 am | 7am | 10pm |
| 3pm | 11:30 am | 8am | 11pm |
| 4pm | 12:30 pm | 9am | 12am (midnight) |
| 5pm | 1:30 pm | 10am | 1am |
| 6pm | 2:30 pm | 11am | 2am |
| 7pm | 3:30 pm | 12pm (noon) | 3am |
| 8pm | 4:30 pm | 1pm | 4am |
| 9pm | 5:30 pm | 2pm | 5am |
| 10pm | 6:30 pm | 3pm | 6am |
| 11pm | 7:30 pm | 4pm | 7am |
| 0:00 | 20:30 | 17:00 | 8:00 |
| 1:00 | 21:30 | 18:00 | 9:00 |
| 2:00 | 22:30 | 19:00 | 10:00 |
| 3:00 | 23:30 | 20:00 | 11:00 |
| 4:00 | 0:30 | 21:00 | 12:00 |
| 5:00 | 1:30 | 22:00 | 13:00 |
| 6:00 | 2:30 | 23:00 | 14:00 |
| 7:00 | 3:30 | 0:00 | 15:00 |
| 8:00 | 4:30 | 1:00 | 16:00 |
| 9:00 | 5:30 | 2:00 | 17:00 |
| 10:00 | 6:30 | 3:00 | 18:00 |
| 11:00 | 7:30 | 4:00 | 19:00 |
| 12:00 | 8:30 | 5:00 | 20:00 |
| 13:00 | 9:30 | 6:00 | 21:00 |
| 14:00 | 10:30 | 7:00 | 22:00 |
| 15:00 | 11:30 | 8:00 | 23:00 |
| 16:00 | 12:30 | 9:00 | 0:00 |
| 17:00 | 13:30 | 10:00 | 1:00 |
| 18:00 | 14:30 | 11:00 | 2:00 |
| 19:00 | 15:30 | 12:00 | 3:00 |
| 20:00 | 16:30 | 13:00 | 4:00 |
| 21:00 | 17:30 | 14:00 | 5:00 |
| 22:00 | 18:30 | 15:00 | 6:00 |
| 23:00 | 19:30 | 16:00 | 7:00 |
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
India Standard Time
Offset: IST is 5 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia
Countries: It is used in following countries: India
Principal Cities: The largest city in the IST timezone is Mumbai from India with population about 12.692 million people. Other major cities in the area are Delhi, Bangalore, Kolkata, Chennai
Daylight Saving: India Standard Time (IST) is not adjusted for daylight saving therefore IST 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, India Standard Time remains the same
IST representations, usage and related time zones
- +0530 - basic
- +05:30 - extended
- +0530 - sign character (+) followed by a four digit time providing hours (05) and minutes (30) of the offset. Indicates five hour and thirty minutes time differences to the east of the zero meridian.
- Asia/Calcutta
- Asia/Kolkata
- India Standard Time - UTC +5:30
- Irish Standard Time - UTC +1
- Israel Standard Time - UTC +2
- Iran Standard Time - UTC +3:30
Central European Time
Offset: CET is 1 hour ahead Greenwich Mean Time (GMT) and is used in Europe
Countries: It is used in following countries: Andorra, Albania, Austria, Bosnia & Herzegovina, Belgium, Switzerland, Czech Republic, Germany, Denmark, Algeria, Spain, France, Gibraltar, Croatia, Hungary, Italy, Liechtenstein, Luxembourg, Monaco, Montenegro, North Macedonia, Malta, Netherlands, Norway, Poland, Serbia, Sweden, Slovenia, Svalbard & Jan Mayen, Slovakia, San Marino, Tunisia, Vatican City
Principal Cities: The largest city in the CET timezone is Berlin from Germany with population about 3.426 million people. Other major cities in the area are Madrid, Rome, Paris, Algiers
German: MEZ - Mitteleuropäische Zeit
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 Central European Summer Time (CEST).
End: Central European Time (CET) has ended on Sunday, March 30, 2025 at 2:00 am local time and clocks were set one hour forward to Sunday, March 30, 2025, 3:00 am local daylight time instead. Standard time ends annually the on last Sunday of March.
Start: Central European Time (CET) starts on Sunday, October 26, 2025 at 3:00 am local time and clocks are set one hour back to Sunday, October 26, 2025, 2:00 am. Standard time starts annually the on last Sunday of October.
CET representations, usage and related time zones
- +01 - basic short
- +0100 - basic
- +01:00 - extended
- +0100 - sign character (+) followed by a four digit time providing hours (01) and minutes (00) of the offset. Indicates one hour and zero minutes time differences to the east of the zero meridian.
- Alpha - Military abbreviation for CET
- A - short form of 'Alpha'
- Africa/Algiers
- Africa/Ceuta
- Africa/Tunis
- Arctic/Longyearbyen
- Atlantic/Jan_Mayen
- CET
- Europe/Amsterdam
- Europe/Andorra
- Europe/Belgrade
- Europe/Berlin
- Europe/Bratislava
- Europe/Brussels
- Europe/Budapest
- Europe/Busingen
- Europe/Copenhagen
- Europe/Gibraltar
- Europe/Ljubljana
- Europe/Luxembourg
- Europe/Madrid
- Europe/Malta
- Europe/Monaco
- Europe/Oslo
- Europe/Paris
- Europe/Podgorica
- Europe/Prague
- Europe/Rome
- Europe/San_Marino
- Europe/Sarajevo
- Europe/Skopje
- Europe/Stockholm
- Europe/Tirane
- Europe/Vaduz
- Europe/Vatican
- Europe/Vienna
- Europe/Warsaw
- Europe/Zagreb
- Europe/Zurich
- MET
- Poland
- BST - British Summer Time
- CET - Central European Time
- IST - Irish Standard Time
- WEST - Western European Summer Time
- A - Alpha Time Zone
- CET - Central European Time
- MEZ - Mitteleuropäische Zeit
- WAT - West Africa Time
- WST - Western Sahara Summer Time
- BMT - Biel Mean Time
Pacific Standard Time
Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America
Countries: It is used in following countries: Canada, Mexico, United States
Principal Cities: The largest city in the PST timezone is Los Angeles from USA with population about 3.793 million people. Other major cities in the area are Vancouver, Tijuana, San Diego, San Jose
French: HNP - Heure Normale du Pacifique
Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste
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 Pacific Daylight Time (PDT).
End: Pacific Standard Time (PST) 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: Pacific Standard Time (PST) 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.
PST representations, usage and related time zones
- -08 - basic short
- -0800 - basic
- -08:00 - extended
- -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates eight hour and zero minutes time differences to the west of the zero meridian.
- Uniform - Military abbreviation for PST
- U - short form of 'Uniform'
- America/Ensenada
- America/Los_Angeles
- America/Santa_Isabel
- America/Tijuana
- America/Vancouver
- Canada/Pacific
- Mexico/BajaNorte
- PST8PDT
- US/Pacific
- Pacific Standard Time - UTC -8
- Pitcairn Standard Time - UTC -8
- Peru Standard Time - UTC -5
- AKDT - Alaska Daylight Time
- PST - Pacific Standard Time
- PT - Pacific Time
- PST - Pitcairn Standard Time
- U - Uniform Time Zone