Time difference
San Juan to Tokyo Time Difference
Tokyo is 13 hours ahead of San Juan — when it's 12:00 PM in San Juan, it's 1:00 AM the next day in Tokyo. (San Juan (America/Puerto_Rico, AST); Tokyo (Asia/Tokyo, JST).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Tokyo is 13 hours ahead of San Juan. Standard 9 AM–5 PM business hours in San Juan and Tokyo do not overlap, so a live call needs one side outside normal hours. San Juan and Tokyo change their clocks together (or don't change at all), so the time difference between them stays the same all year.
- When it's 9:00 AM in San Juan, it's 10:00 PM in Tokyo.
- When it's 9:00 AM in Tokyo, it's 8:00 PM the previous day in San Juan.
Tokyo is currently 13 hours ahead of San Juan.
Interactive converter
12:00PM
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Best times to meet
Standard 9 AM – 5 PM hours in San Juan and Tokyo do not overlap. The least-bad options are an early start in one city or a late evening call in the other — for example a 7–8 AM meeting in San Juan, or a 6–8 PM meeting in Tokyo.
Quick conversion table
| San Juan | Tokyo |
|---|---|
| 12 AM | 1:00 PM |
| 1 AM | 2:00 PM |
| 2 AM | 3:00 PM |
| 3 AM | 4:00 PM |
| 4 AM | 5:00 PM |
| 5 AM | 6:00 PM |
| 6 AM | 7:00 PM |
| 7 AM | 8:00 PM |
| 8 AM | 9:00 PM |
| 9 AM | 10:00 PM |
| 10 AM | 11:00 PM |
| 11 AM | 12:00 AM (next day) |
| 12 PM | 1:00 AM (next day) |
| 1 PM | 2:00 AM (next day) |
| 2 PM | 3:00 AM (next day) |
| 3 PM | 4:00 AM (next day) |
| 4 PM | 5:00 AM (next day) |
| 5 PM | 6:00 AM (next day) |
| 6 PM | 7:00 AM (next day) |
| 7 PM | 8:00 AM (next day) |
| 8 PM | 9:00 AM (next day) |
| 9 PM | 10:00 AM (next day) |
| 10 PM | 11:00 AM (next day) |
| 11 PM | 12:00 PM (next day) |
Daylight saving
The time difference between these two cities stays the same over the next twelve months — neither zone is changing for daylight saving in that window.
- San Juan does not observe daylight saving time.
- Tokyo does not observe daylight saving time.
Frequently asked questions
- Is Tokyo ahead of or behind San Juan?
- Tokyo is 13 hours ahead of San Juan.
- How many hours ahead of San Juan is Tokyo?
- Tokyo is 13 hours ahead of San Juan.
- What time is 9 AM in San Juan in Tokyo?
- 9:00 AM in San Juan is 10:00 PM in Tokyo.
- What time is noon in San Juan in Tokyo?
- 12:00 PM in San Juan is 1:00 AM the next day in Tokyo.
- What time is 5 PM in San Juan in Tokyo?
- 5:00 PM in San Juan is 6:00 AM the next day in Tokyo. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in San Juan in Tokyo?
- 3:00 PM in San Juan is 4:00 AM the next day in Tokyo.
- Is San Juan currently observing daylight saving time?
- San Juan does not observe daylight saving time — its UTC offset stays the same all year.
- Is Tokyo currently observing daylight saving time?
- Tokyo does not observe daylight saving time — its UTC offset stays the same all year.
- Do San Juan and Tokyo observe daylight saving?
- The time difference between these two cities stays the same over the next twelve months — neither zone is changing for daylight saving in that window.
- When is the best time to call Tokyo from San Juan?
- San Juan and Tokyo business hours don't overlap. The closest options are early mornings in San Juan or late evenings, when one side stretches outside 9–5.
- When is the best time to call San Juan from Tokyo?
- Tokyo and San Juan business hours don't overlap. The closest options are early mornings in Tokyo or late evenings, when one side stretches outside 9–5.
- San Juan (AST) to Tokyo (JST) — how do I convert quickly?
- Add 13 hours to San Juan local time to get Tokyo local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
- New York to San Juan
- London to San Juan
- Dubai to San Juan
- San Juan to Singapore
- Los Angeles to San Juan
- San Juan to Sydney
- Paris to San Juan
- Mumbai to San Juan
- Hong Kong to San Juan
- San Francisco to San Juan