The best time to call San Juan from Tokyo is 7 AM–9 AM your time (Tokyo). San Juan, Puerto Rico is 11 hours ahead of Tokyo, Japan. There is no standard business hours overlap, so one party will need to adjust their schedule.
Call between 7 AM–9 AM Tokyo time.
Tokyo and San Juan have no overlapping standard business hours. One party will need to adjust.
The best time to call San Juan from Tokyo is 7 AM–9 AM Tokyo time. There is no standard business hours overlap between these cities.
San Juan is 11 hours ahead of Tokyo.
Avoid calling before 8 PM your time (they haven't started their day). Consider email or async communication for non-urgent matters.
No, Tokyo and San Juan do not have overlapping standard business hours (9 AM – 5 PM). You will need to schedule calls outside normal hours for one party.
No business hours overlap. You'll need to call outside standard hours — 7 AM–9 AM your time is the least disruptive window.
Both in business hours Both awake One outside comfort zone Sleeping hours
No standard business hours overlap (9 AM – 5 PM) between Tokyo and San Juan.
One party will need to adjust their schedule for calls.
| Tokyo (GMT+9) | San Juan (AST) | Status |
|---|---|---|
| 7 AM | 6 PM | 🟡 They're awake |
| 8 AM | 7 PM | 🟡 They're awake |
| 9 AM | 8 PM | 🟡 They're awake |
| 10 AM | 9 PM | 🟡 They're awake |
| 11 AM | 10 PM | 🔴 They're sleeping |
| 12 PM | 11 PM | 🔴 They're sleeping |
| 1 PM | 12 AM | 🔴 They're sleeping |
| 2 PM | 1 AM | 🔴 They're sleeping |
| 3 PM | 2 AM | 🔴 They're sleeping |
| 4 PM | 3 AM | 🔴 They're sleeping |
| 5 PM | 4 AM | 🔴 They're sleeping |
| 6 PM | 5 AM | 🔴 They're sleeping |
| 7 PM | 6 AM | 🔴 They're sleeping |
| 8 PM | 7 AM | 🟡 They're awake |
| 9 PM | 8 AM | 🟡 They're awake |