Skip to main content

San Juan to Cancún Time

AST to EST Converter — 9 AM AST is 8:00 AM EST

San Juan is 1 hour ahead of Cancún. Convert any time between San Juan (AST) and Cancún (EST) instantly.

San Juan

Puerto Rico

AST
UTC-4 · AST

Cancún

Mexico

EST
UTC-5 · EST
San Juan is 1 hour ahead of Cancún.

Add Time Zones to Compare

San Juan(UTC-4)
Cancún(UTC-5)

Time Zone Comparison

San Juan
8:00 AM
Puerto Rico · AST
12:00 PM
12amNight
1amNight
2amNight
3amNight
4amNight
5amNight
6amNight
7amNight
8amNight
9amWorking hours
10amWorking hours
11amWorking hours
12pmWorking hours
1pmWorking hours
2pmWorking hours
3pmWorking hours
4pmWorking hours
5pmEvening
6pmEvening
7pmEvening
8pmEvening
9pmNight
10pmNight
11pmNight
Cancún
7:00 AM
Mexico · EST
11:00 AM
11pmNight
12amNight
1amNight
2amNight
3amNight
4amNight
5amNight
6amNight
7amNight
8amNight
9amWorking hours
10amWorking hours
11amWorking hours
12pmWorking hours
1pmWorking hours
2pmWorking hours
3pmWorking hours
4pmWorking hours
5pmEvening
6pmEvening
7pmEvening
8pmEvening
9pmNight
10pmNight
Working
Evening
Night
Now
Selected Time
Minutes:
San Juan12:00 PM
Cancún11:00 AM

San Juan to Cancún Time Conversion Table

San Juan (AST)Cancún (EST)
12:00 AM11:00 PM
2:00 AM1:00 AM
4:00 AM3:00 AM
6:00 AM5:00 AM
8:00 AM7:00 AM
10:00 AM9:00 AM
12:00 PM11:00 AM
2:00 PM1:00 PM
4:00 PM3:00 PM
6:00 PM5:00 PM
8:00 PM7:00 PM
10:00 PM9:00 PM
Working hours (9 AM - 5 PM)
Evening (5 PM - 9 PM)
Night

San Juan & Cancún — Business & Scheduling Guide

San Juan (Puerto Rico) is a US territory with pharmaceutical and tech manufacturing, with key industries in pharmaceuticals, medical devices, electronics, and tourism. Cancún (Mexico) is a major manufacturing and trade partner in North America, known for automotive, aerospace, electronics assembly, and agriculture. 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 San Juan and Cancún

With only a 1-hour gap, San Juan and Cancún have generous overlapping work hours. Morning calls in the earlier time zone align well with mid-day in the other. Puerto Rican business hours are typically 8 AM–5 PM, with a bilingual (English/Spanish) workforce. Mexican business hours typically run 9 AM–6 PM, with a culture that values personal relationships in professional settings. Most teams find that late morning to early afternoon offers the widest window for collaboration.

Daylight Saving Time Considerations

Neither San Juan nor Cancún observes Daylight Saving Time — San Juan stays on AST and Cancún stays on EST 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 San Juan and Cancún 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 San Juan–Cancún 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 San Juan & Cancún

San Juan, a key city in Puerto Rico, and Cancún, a key city in Mexico, 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 Cancún from San Juan (or vice versa) without disrupting your standard workday.

AST to EST — Quick Reference

AST (AST) stands for the timezone used in San Juan, Puerto Rico (UTC-4). EST (EST) is the timezone used in Cancún, Mexico (UTC-5). San Juan is 1 hour ahead of Cancún.

To convert AST to EST, subtract 1 hours from AST time. For example, AST 9:00 AM = EST 8:00 AM.

Key Facts

  • Time difference: San Juan (UTC-4) is 1 hour ahead of Cancún (UTC-5).
  • Daylight Saving Time: San Juan does not observe DST (AST). Cancún does not observe DST (EST).
  • Regions: San Juan is located in Puerto Rico and uses the AST time zone. Cancún is located in Mexico and uses the EST time zone.
  • Best time to call: The best time to call between San Juan and Cancún is 10:00 AM to 4:00 PM in San Juan time, when both cities have overlapping standard working hours.

Frequently Asked Questions

What is the time difference between San Juan and Cancún?

San Juan is 1 hour ahead of Cancún.

What time is it in Cancún when it's 9 AM in San Juan?

When it's 9:00 AM in San Juan, it is 8:00 AM in Cancún.

What time is 9 PM AST in EST?

9 PM AST (San Juan time) is 8:00 PM EST (Cancún 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 San Juan and Cancún?

The best time to schedule a meeting is between 10:00 AM to 4:00 PM in San Juan 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 AST to EST?

AST (AST) is the timezone for San Juan, Puerto Rico (UTC-4). EST (EST) is the timezone for Cancún, Mexico (UTC-5). San Juan is 1 hour ahead of Cancún. Quick examples: 9 AM AST = 8:00 AM EST, 12 PM AST = 11:00 AM EST, 3 PM AST = 2:00 PM EST, 6 PM AST = 5:00 PM EST.

Is San Juan ahead of or behind Cancún?

San Juan is 1 hour ahead of Cancún. When it's noon in San Juan, it's 11:00 AM in Cancún.

Does San Juan or Cancún change clocks for Daylight Saving Time?

No, San Juan does not observe DST — it stays on AST year-round. Cancún does not observe DST — it stays on EST year-round.

What time is noon in San Juan in Cancún time?

When it is 12:00 PM (noon) in San Juan (AST), it is 11:00 AM in Cancún (EST). This is often a popular time for scheduling lunch-hour calls across the San Juan–Cancún corridor.

What are the overlapping work hours between San Juan and Cancún?

The overlapping work hours between San Juan and Cancún are approximately 10:00 AM to 4:00 PM in San Juan 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 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.

What timezone is Cancún in?

Cancún is in the EST time zone (UTC-5). It is located in Mexico. Cancún does not observe Daylight Saving Time.

How do I schedule a call between San Juan and Cancún?

To schedule a call between San Juan and Cancún, aim for the overlapping window of 10:00 AM to 4:00 PM in San Juan time. Use Google Calendar or Calendly with both time zones visible, share the meeting invite with the EST 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 AST / 9:00 AM EST").

View all time zone conversions
Automate This

Working across time zones?

Auto-sync calendar events into your timesheet — no matter what time zone your team is in. Connect Google Calendar, Teams, or Zoom and export a polished timesheet in seconds.

Google CalendarTeamsZoomJira+4 more
Auto-pull eventsExport in <30s100% private
Try Fill the Timesheet — Free

No credit card required. Free forever plan available.