SST to JST Time Converter
Use this SST to JST time converter to compare American Samoa and Japan time instantly. JST is 20 hours ahead of SST, so 9:00 AM SST becomes 5:00 AM (next day) JST and 5:00 PM SST becomes 1:00 PM (next day) JST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
SST to JST Quick Facts
Use this SST to JST converter to compare American Samoa and Japan time, check the 20 hours gap, and confirm the right slot for calls, handoffs, and deadlines. Find the best overlap for calls and meetings.
How to Convert SST to JST
Converting between Samoa Standard Time and Japan Standard Time means accounting for a 20 hours gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Samoa Standard Time (UTC -11) that you want to convert. Hit "Now" to load the current SST time instantly, or use "+1h" to step forward and compare.
The equivalent Japan Standard Time (UTC +9) time appears immediately. Since JST is 20 hours ahead of SST, conversions often cross midnight — look for the date-change label.
Click "Copy Time" to grab the JST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — helpful for scheduling recurring American Samoa–Japan calls.
Why Choose Our SST to JST Converter
With 20 hours between SST and JST, business-hours overlap is limited. This tool instantly shows which hours work on both sides, so you can lock in a meeting without a chain of "does 3 PM work for you?" emails.
A SST evening at 9 PM is already the next morning in JST. This converter flags date changes beside the result — critical when booking flights, hitting deadlines, or scheduling across the American Samoa–Japan corridor.
Daylight Saving adjustments can widen or narrow the SST–JST gap by an hour. During transition weeks many people get it wrong. This converter pulls the current UTC offsets automatically, so the result is right even on the changeover day.
Product launches, sports matches, and webinars are often announced in SST. Convert the event time to JST so you know exactly when to tune in — with a 20 hours difference, a morning event in American Samoa falls during work hours in Japan.
SST to JST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Samoa Standard Time to Japan Standard Time full day schedule
| Samoa Standard Time | Japan Standard Time |
|---|---|
| 12:00 AM |
8:00 PM
|
| 1:00 AM |
9:00 PM
|
| 2:00 AM |
10:00 PM
|
| 3:00 AM |
11:00 PM
|
| 4:00 AM |
12:00 AM
(next day)
|
| 5:00 AM |
1:00 AM
(next day)
|
| 6:00 AM |
2:00 AM
(next day)
|
| 7:00 AM |
3:00 AM
(next day)
|
| 8:00 AM |
4:00 AM
(next day)
|
| 9:00 AM |
5:00 AM
(next day)
|
| 10:00 AM |
6:00 AM
(next day)
|
| 11:00 AM |
7:00 AM
(next day)
|
| 12:00 PM |
8:00 AM
(next day)
|
| 1:00 PM |
9:00 AM
(next day)
|
| 2:00 PM |
10:00 AM
(next day)
|
| 3:00 PM |
11:00 AM
(next day)
|
| 4:00 PM |
12:00 PM
(next day)
|
| 5:00 PM |
1:00 PM
(next day)
|
| 6:00 PM |
2:00 PM
(next day)
|
| 7:00 PM |
3:00 PM
(next day)
|
| 8:00 PM |
4:00 PM
(next day)
|
| 9:00 PM |
5:00 PM
(next day)
|
| 10:00 PM |
6:00 PM
(next day)
|
| 11:00 PM |
7:00 PM
(next day)
|
Timezone offsets and DST rules verified against the IANA Time Zone Database. Conversion math and business-hour overlap windows double-checked against real-world scheduling scenarios.
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