Offset
The time difference between Reykjavík and Osaka is 9 hours.
Reykjavík (GMT) is behind Osaka (JST).
GMT: UTC
JST: UTC+9
Neither Reykjavík nor Osaka is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Reykjavík and Osaka don't overlap on the same weekday. Osaka is 9 hours ahead of Reykjavík.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–11 AM in Reykjavík (4 PM–8 PM in Osaka) — suggest 9:00 AM Reykjavík (6:00 PM Osaka).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Iceland
- New Year's DayThu, Jan 1
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Easter MondayMon, Apr 6
- First Day of SummerThu, Apr 23
- May DayFri, May 1
- Ascension DayThu, May 14
- PentecostSun, May 24
- Whit MondayMon, May 25
- Icelandic National DayWed, Jun 17
- Commerce DayMon, Aug 3
- Christmas EveThu, Dec 24
- Christmas DayFri, Dec 25
- St. Stephen's DaySat, Dec 26
- New Year's EveThu, Dec 31
Japan
- New Year's DayThu, Jan 1
- Coming of Age DayMon, Jan 12
- Foundation DayWed, Feb 11
- The Emperor's BirthdayMon, Feb 23
- Vernal Equinox DayFri, Mar 20
- Shōwa DayWed, Apr 29
- Constitution Memorial DayWed, May 6
- Greenery DayMon, May 4
- Children's DayTue, May 5
- Marine DayMon, Jul 20
- Mountain DayTue, Aug 11
- Respect for the Aged DayMon, Sep 21
- Autumnal Equinox DayWed, Sep 23
- Sports DayMon, Oct 12
- Culture DayTue, Nov 3
- Labour Thanksgiving DayMon, Nov 23
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Reykjavík | Osaka | Day |
|---|---|---|
| 12:00 am | 9:00 am | Same day |
| 1:00 am | 10:00 am | Same day |
| 2:00 am | 11:00 am | Same day |
| 3:00 am | 12:00 pm | Same day |
| 4:00 am | 1:00 pm | Same day |
| 5:00 am | 2:00 pm | Same day |
| 6:00 am | 3:00 pm | Same day |
| 7:00 am | 4:00 pm | Same day |
| 8:00 am | 5:00 pm | Same day |
| 9:00 am | 6:00 pm | Same day |
| 10:00 am | 7:00 pm | Same day |
| 11:00 am | 8:00 pm | Same day |
| 12:00 pm | 9:00 pm | Same day |
| 1:00 pm | 10:00 pm | Same day |
| 2:00 pm | 11:00 pm | Same day |
| 3:00 pm | 12:00 am | +1 day |
| 4:00 pm | 1:00 am | +1 day |
| 5:00 pm | 2:00 am | +1 day |
| 6:00 pm | 3:00 am | +1 day |
| 7:00 pm | 4:00 am | +1 day |
| 8:00 pm | 5:00 am | +1 day |
| 9:00 pm | 6:00 am | +1 day |
| 10:00 pm | 7:00 am | +1 day |
| 11:00 pm | 8:00 am | +1 day |
Daylight saving time
Neither Reykjavík nor Osaka observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 3:08 AM
- Sunset
- 11:47 PM
- Day length
- 20h 38m
- Sunrise
- 4:46 AM
- Sunset
- 7:10 PM
- Day length
- 14h 25m
Daylight overlap: 7h 2m — 3:08 AM–10:10 AM in Reykjavík (12:08 PM–7:10 PM in Osaka). Both locations are in daylight during this window.
Cities in these zones
Other cities in Japan Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Greenwich Mean Time
- KEF
- RKV
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Related conversions
Common conversions
- What is 9:00 am Reykjavík in Osaka?
- 9:00 am Reykjavík is 6:00 pm Osaka.
- What is 12:00 pm Reykjavík in Osaka?
- 12:00 pm Reykjavík is 9:00 pm Osaka.
- What is 12:30 pm Reykjavík in Osaka?
- 12:30 pm Reykjavík is 9:30 pm Osaka.
- What is 2:00 pm Reykjavík in Osaka?
- 2:00 pm Reykjavík is 11:00 pm Osaka.
- What is 5:00 pm Reykjavík in Osaka?
- 5:00 pm Reykjavík is 2:00 am Osaka, the next day.
- What is 11:30 pm Reykjavík in Osaka?
- 11:30 pm Reykjavík is 8:30 am Osaka, the next day.