Offset
The time difference between St. Louis and Osaka is 14 hours.
St. Louis (CDT) is behind Osaka (JST).
CDT: UTC-5
JST: UTC+9
St. Louis is currently observing daylight saving time; Osaka is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in St. Louis and Osaka don't overlap on the same weekday. Osaka is 14 hours ahead of St. Louis.
With some flexibility, there’s a workable window outside standard hours:
- 5 PM–8 PM in St. Louis (7 AM–10 AM the next day in Osaka) — suggest 6:00 PM St. Louis (8:00 AM Osaka).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
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.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
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.
| St. Louis | Osaka | Day |
|---|---|---|
| 12:00 am | 2:00 pm | Same day |
| 1:00 am | 3:00 pm | Same day |
| 2:00 am | 4:00 pm | Same day |
| 3:00 am | 5:00 pm | Same day |
| 4:00 am | 6:00 pm | Same day |
| 5:00 am | 7:00 pm | Same day |
| 6:00 am | 8:00 pm | Same day |
| 7:00 am | 9:00 pm | Same day |
| 8:00 am | 10:00 pm | Same day |
| 9:00 am | 11:00 pm | Same day |
| 10:00 am | 12:00 am | +1 day |
| 11:00 am | 1:00 am | +1 day |
| 12:00 pm | 2:00 am | +1 day |
| 1:00 pm | 3:00 am | +1 day |
| 2:00 pm | 4:00 am | +1 day |
| 3:00 pm | 5:00 am | +1 day |
| 4:00 pm | 6:00 am | +1 day |
| 5:00 pm | 7:00 am | +1 day |
| 6:00 pm | 8:00 am | +1 day |
| 7:00 pm | 9:00 am | +1 day |
| 8:00 pm | 10:00 am | +1 day |
| 9:00 pm | 11:00 am | +1 day |
| 10:00 pm | 12:00 pm | +1 day |
| 11:00 pm | 1:00 pm | +1 day |
Daylight saving time
St. Louis observes daylight saving time; Osaka does not. The offset between the two zones changes when St. Louis transitions: on Sunday, November 1, 2026, clocks fall back from CDT to CST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:37 AM
- Sunset
- 8:24 PM
- Day length
- 14h 47m
- Sunrise
- 4:46 AM
- Sunset
- 7:10 PM
- Day length
- 14h 25m
Daylight overlap: 5h 38m — 2:46 PM–8:24 PM in St. Louis (4:46 AM–10:24 AM in Osaka). Both locations are in daylight during this window.
Cities in these zones
Other cities in Central Time
Other cities in Japan Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central Time
- GYY
- MDW
- ORD
- HOU
- IAH
- SAT
- DAL
- DFW
- AUS
- BNA
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Related conversions
Common conversions
- What is 9:00 am St. Louis in Osaka?
- 9:00 am St. Louis is 11:00 pm Osaka.
- What is 12:00 pm St. Louis in Osaka?
- 12:00 pm St. Louis is 2:00 am Osaka, the next day.
- What is 12:30 pm St. Louis in Osaka?
- 12:30 pm St. Louis is 2:30 am Osaka, the next day.
- What is 2:00 pm St. Louis in Osaka?
- 2:00 pm St. Louis is 4:00 am Osaka, the next day.
- What is 5:00 pm St. Louis in Osaka?
- 5:00 pm St. Louis is 7:00 am Osaka, the next day.
- What is 11:30 pm St. Louis in Osaka?
- 11:30 pm St. Louis is 1:30 pm Osaka, the next day.