New York to San Juan Time
EST to AST Converter — 9 AM EST is 10:00 AM AST
New York is 1 hour behind San Juan. Convert any time between New York (EST/EDT) and San Juan (AST) instantly.
New York
United States
San Juan
Puerto Rico
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Time Zone Comparison
New York to San Juan Time Conversion Table
| New York (EST) | San Juan (AST) |
|---|---|
| 12:00 AM | 12:00 AM |
| 2:00 AM | 2:00 AM |
| 4:00 AM | 4:00 AM |
| 6:00 AM | 6:00 AM |
| 8:00 AM | 8:00 AM |
| 10:00 AM | 10:00 AM |
| 12:00 PM | 12:00 PM |
| 2:00 PM | 2:00 PM |
| 4:00 PM | 4:00 PM |
| 6:00 PM | 6:00 PM |
| 8:00 PM | 8:00 PM |
| 10:00 PM | 10:00 PM |
New York & San Juan — Business & Scheduling Guide
New York is the financial capital of the world and home to Wall Street, known for global finance, media, advertising, fashion, and Fortune 500 headquarters. 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 New York and San Juan
With only a 1-hour gap, New York and San Juan have generous overlapping work hours. Morning calls in the later time zone align well with mid-day in the other. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. 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
New York observes Daylight Saving Time (EST/EDT), but San Juan does not — it stays on AST year-round. This means the time difference between New York and San Juan changes by 1 hour when New York switches clocks. During United States's summer, the gap is 0–2 hours instead of the standard 1 hours. Mark DST transition dates on your calendar to avoid missed meetings.
Collaboration Tools & Workflow
Teams working between New York 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 New York–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 New York & San Juan
New York, global finance, 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 New York (or vice versa) without disrupting your standard workday.
EST to AST — Quick Reference
EST (EST/EDT) stands for the timezone used in New York, United States (UTC-5). AST (AST) is the timezone used in San Juan, Puerto Rico (UTC-4). New York is 1 hour behind San Juan.
To convert EST to AST, add 1 hours to EST time. For example, EST 9:00 AM = AST 10:00 AM.
Key Facts
- •Time difference: New York (UTC-5) is 1 hour behind San Juan (UTC-4).
- •Daylight Saving Time: New York observes DST (EST/EDT). San Juan does not observe DST (AST).
- •Regions: New York is located in United States and uses the EST/EDT 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 New York and San Juan is 9:00 AM to 3:00 PM in New York time, when both cities have overlapping standard working hours.
Frequently Asked Questions
What is the time difference between New York and San Juan?
New York is 1 hour behind San Juan.
What time is it in San Juan when it's 9 AM in New York?
When it's 9:00 AM in New York, it is 10:00 AM in San Juan.
What time is 9 PM EST in AST?
9 PM EST (New York 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 New York and San Juan?
The best time to schedule a meeting is between 9:00 AM to 3:00 PM in New York 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 EST to AST?
EST (EST/EDT) is the timezone for New York, United States (UTC-5). AST (AST) is the timezone for San Juan, Puerto Rico (UTC-4). New York is 1 hour behind San Juan. Quick examples: 9 AM EST = 10:00 AM AST, 12 PM EST = 1:00 PM AST, 3 PM EST = 4:00 PM AST, 6 PM EST = 7:00 PM AST.
Is New York ahead of or behind San Juan?
New York is 1 hour behind San Juan. When it's noon in New York, it's 1:00 PM in San Juan.
Does New York or San Juan change clocks for Daylight Saving Time?
Yes, New York observes DST and switches between EST/EDT. San Juan does not observe DST — it stays on AST year-round. Because only one city observes DST, the time difference shifts by 1 hour during transition periods (typically March/April and October/November).
What time is noon in New York in San Juan time?
When it is 12:00 PM (noon) in New York (EST), it is 1:00 PM in San Juan (AST). This is often a popular time for scheduling lunch-hour calls across the New York–San Juan corridor.
What are the overlapping work hours between New York and San Juan?
The overlapping work hours between New York and San Juan are approximately 9:00 AM to 3:00 PM in New York 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 New York in?
New York is in the EST/EDT time zone (UTC-5). It is located in United States. New York observes Daylight Saving Time, switching between EST/EDT.
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 New York and San Juan?
To schedule a call between New York and San Juan, aim for the overlapping window of 9:00 AM to 3:00 PM in New York 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 EST / 11:00 AM AST").
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