The best time to call Singapore from San Juan is 7 AM–9 AM your time (San Juan). Singapore, Singapore is 12 hours ahead of San Juan, Puerto Rico. There is no standard business hours overlap, so one party will need to adjust their schedule.
Call between 7 AM–9 AM San Juan time.
San Juan and Singapore have no overlapping standard business hours. One party will need to adjust.
The best time to call Singapore from San Juan is 7 AM–9 AM San Juan time. There is no standard business hours overlap between these cities.
Singapore is 12 hours ahead of San Juan.
Avoid calling after 10 AM your time (it's late night there). Consider email or async communication for non-urgent matters.
No, San Juan and Singapore 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 San Juan and Singapore.
One party will need to adjust their schedule for calls.
| San Juan (AST) | Singapore (GMT+8) | Status |
|---|---|---|
| 7 AM | 7 PM | 🟡 They're awake |
| 8 AM | 8 PM | 🟡 They're awake |
| 9 AM | 9 PM | 🟡 They're awake |
| 10 AM | 10 PM | 🔴 They're sleeping |
| 11 AM | 11 PM | 🔴 They're sleeping |
| 12 PM | 12 AM | 🔴 They're sleeping |
| 1 PM | 1 AM | 🔴 They're sleeping |
| 2 PM | 2 AM | 🔴 They're sleeping |
| 3 PM | 3 AM | 🔴 They're sleeping |
| 4 PM | 4 AM | 🔴 They're sleeping |
| 5 PM | 5 AM | 🔴 They're sleeping |
| 6 PM | 6 AM | 🔴 They're sleeping |
| 7 PM | 7 AM | 🟡 They're awake |
| 8 PM | 8 AM | 🟡 They're awake |
| 9 PM | 9 AM | 🟡 They're awake |