Lima to San Juan Time
PET to AST Converter — 9 AM PET is 10:00 AM AST
Lima is 1 hour behind San Juan. Convert any time between Lima (PET) and San Juan (AST) instantly.
Lima
Peru
San Juan
Puerto Rico
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Time Zone Comparison
Lima to San Juan Time Conversion Table
| Lima (PET) | San Juan (AST) |
|---|---|
| 12:00 AM | 1:00 AM |
| 2:00 AM | 3:00 AM |
| 4:00 AM | 5:00 AM |
| 6:00 AM | 7:00 AM |
| 8:00 AM | 9:00 AM |
| 10:00 AM | 11:00 AM |
| 12:00 PM | 1:00 PM |
| 2:00 PM | 3:00 PM |
| 4:00 PM | 5:00 PM |
| 6:00 PM | 7:00 PM |
| 8:00 PM | 9:00 PM |
| 10:00 PM | 11:00 PM |
Lima & San Juan — Business & Scheduling Guide
Lima (Peru) is one of Latin America's fastest-growing economies, with key industries in mining, agriculture, textiles, and tourism. San Juan (Puerto Rico) is a US territory with pharmaceutical and tech manufacturing, known for pharmaceuticals, medical devices, electronics, and tourism. With a 1-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.
Scheduling Meetings Between Lima and San Juan
With only a 1-hour gap, Lima and San Juan have generous overlapping work hours. Morning calls in the later time zone align well with mid-day in the other. Peruvian business hours are typically 9 AM–6 PM, with Lima as the main commercial and financial center. Puerto Rican business hours are typically 8 AM–5 PM, with a bilingual (English/Spanish) workforce. Most teams find that late morning to early afternoon offers the widest window for collaboration.
Daylight Saving Time Considerations
Neither Lima nor San Juan observes Daylight Saving Time — Lima stays on PET and San Juan stays on AST year-round. This makes scheduling between these two cities simpler, as the 1-hour time difference remains constant throughout the year with no DST surprises.
Collaboration Tools & Workflow
Teams working between Lima and San Juan enjoy strong real-time collaboration potential. With just a 1-hour time difference, daily standups, pair programming, and spontaneous video calls are all practical. Popular tools for Lima–San Juan teams include Slack for real-time messaging, Google Meet or Zoom for video calls, and Notion or Linear for project management. The overlapping work window is wide enough that most teams can operate nearly synchronously.
Remote Work Between Lima & San Juan
Lima, a key city in Peru, and San Juan, a key city in Puerto Rico, are well-connected for remote work. With a manageable 1-hour time difference, distributed teams can maintain a near-synchronous workflow. Both cities have strong internet infrastructure, coworking spaces, and established remote work cultures. For freelancers and remote workers, this time zone pairing is ideal — you can serve clients in San Juan from Lima (or vice versa) without disrupting your standard workday.
PET to AST — Quick Reference
PET (PET) stands for the timezone used in Lima, Peru (UTC-5). AST (AST) is the timezone used in San Juan, Puerto Rico (UTC-4). Lima is 1 hour behind San Juan.
To convert PET to AST, add 1 hours to PET time. For example, PET 9:00 AM = AST 10:00 AM.
Key Facts
- •Time difference: Lima (UTC-5) is 1 hour behind San Juan (UTC-4).
- •Daylight Saving Time: Lima does not observe DST (PET). San Juan does not observe DST (AST).
- •Regions: Lima is located in Peru and uses the PET time zone. San Juan is located in Puerto Rico and uses the AST time zone.
- •Best time to call: The best time to call between Lima and San Juan is 9:00 AM to 3:00 PM in Lima time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between Lima and San Juan?
Lima is 1 hour behind San Juan.
What time is it in San Juan when it's 9 AM in Lima?
When it's 9:00 AM in Lima, it is 10:00 AM in San Juan.
What time is 9 PM PET in AST?
9 PM PET (Lima time) is 10:00 PM AST (San Juan time). This is a common time people check when scheduling evening calls across these two time zones.
When is the best time to schedule a meeting between Lima and San Juan?
The best time to schedule a meeting is between 9:00 AM to 3:00 PM in Lima time, when both cities are within standard working hours (9 AM – 5 PM). This gives you the maximum overlap window for real-time collaboration.
How do I convert PET to AST?
PET (PET) is the timezone for Lima, Peru (UTC-5). AST (AST) is the timezone for San Juan, Puerto Rico (UTC-4). Lima is 1 hour behind San Juan. Quick examples: 9 AM PET = 10:00 AM AST, 12 PM PET = 1:00 PM AST, 3 PM PET = 4:00 PM AST, 6 PM PET = 7:00 PM AST.
Is Lima ahead of or behind San Juan?
Lima is 1 hour behind San Juan. When it's noon in Lima, it's 1:00 PM in San Juan.
Does Lima or San Juan change clocks for Daylight Saving Time?
No, Lima does not observe DST — it stays on PET year-round. San Juan does not observe DST — it stays on AST year-round.
What time is noon in Lima in San Juan time?
When it is 12:00 PM (noon) in Lima (PET), it is 1:00 PM in San Juan (AST). This is often a popular time for scheduling lunch-hour calls across the Lima–San Juan corridor.
What are the overlapping work hours between Lima and San Juan?
The overlapping work hours between Lima and San Juan are approximately 9:00 AM to 3:00 PM in Lima time, when both cities are within the standard 9 AM–5 PM workday. This is the ideal window for meetings, pair programming, and real-time collaboration.
What timezone is Lima in?
Lima is in the PET time zone (UTC-5). It is located in Peru. Lima does not observe Daylight Saving Time.
What timezone is San Juan in?
San Juan is in the AST time zone (UTC-4). It is located in Puerto Rico. San Juan does not observe Daylight Saving Time.
How do I schedule a call between Lima and San Juan?
To schedule a call between Lima and San Juan, aim for the overlapping window of 9:00 AM to 3:00 PM in Lima time. Use Google Calendar or Calendly with both time zones visible, share the meeting invite with the AST time clearly noted, and always double-check the time difference — especially during DST transitions. Pro tip: include both local times in the calendar invite title (e.g., "Sync — 10 AM PET / 11:00 AM AST").
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