Japan Standard Time (jst) is used in Japan. The IANA timezone identifier is Asia/Tokyo.

Pakistan Standard Time (pkt) is used in Pakistan. The IANA timezone identifier is Asia/Karachi.

JST to PKT Time Converter

Japan Standard Time → Pakistan Standard Time

JST = UTC+9PKT = UTC+5

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

PKT (Karachi)

Pakistan · -4h

05:00

London

United Kingdom · -8h

01:00

New York

USA · -13h

20:00-1 day

Dubai

United Arab Emirates · -5h

04:00

Sydney

Australia · +1h

10:00

JST (Tokyo) vs PKT (Karachi) — time difference

JST (Tokyo) is 4 hours ahead of PKT (Karachi). When JST (Tokyo) clocks hit noon, PKT (Karachi) reads 08:00.

JST (Tokyo) observes Asia/Tokyo and PKT (Karachi) observes Asia/Karachi — a 4 hours gap between them.

Shared working hours

Every working day, JST (Tokyo) and PKT (Karachi) are both in business hours for 4 hours simultaneously.

00:0006:0012:0018:0024:00

JST (Tokyo)

PKT (Karachi)

Overlap (4h)

Optimal meeting slots

JST (Tokyo) and PKT (Karachi) share 4 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.

13:00 Tokyo / 09:00 Karachi✓ Both working

14:00 Tokyo / 10:00 Karachi✓ Both working

15:00 Tokyo / 11:00 Karachi✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Holiday calendar for both locations

JST (Tokyo)7 holidays

Jul 20Marine Day

Aug 11Mountain Day

Sep 21Respect for the Aged Day

Sep 23Autumnal Equinox Day

Oct 12Sports Day

PKT (Karachi)

No upcoming public holidays this year.

Working across JST (Tokyo) and PKT (Karachi)

Coordinating between JST (Tokyo) (Japan) and PKT (Karachi) (Pakistan) means working around a 4-hour time difference. The 4-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.

💡 Best practice for cross-timezone meetings

✅

Schedule at 13:00–14:00 (JST (Tokyo)) for a 09:00–10:00 slot in PKT (Karachi) — the sweet spot where both teams are working.

✅

Schedule at 14:00–15:00 (JST (Tokyo)) for a 10:00–11:00 slot in PKT (Karachi) — the sweet spot where both teams are working.

✅

Schedule at 15:00–16:00 (JST (Tokyo)) for a 11:00–12:00 slot in PKT (Karachi) — the sweet spot where both teams are working.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any JST (Tokyo) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

JST (Tokyo) ↔ PKT (Karachi)

4h of business hours overlap daily (09:00–17:00)

JST (Tokyo)

PKT (Karachi)