Hagåtña to San Juan Time
ChST to AST Converter — 9 AM ChST is 7:00 PM AST
Hagåtña is 14 hours ahead of San Juan. Convert any time between Hagåtña (ChST) and San Juan (AST) instantly.
Hagåtña
Guam
San Juan
Puerto Rico
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Time Zone Comparison
Hagåtña to San Juan Time Conversion Table
| Hagåtña (ChST) | San Juan (AST) |
|---|---|
| 12:00 AM | 10:00 AM |
| 2:00 AM | 12:00 PM |
| 4:00 AM | 2:00 PM |
| 6:00 AM | 4:00 PM |
| 8:00 AM | 6:00 PM |
| 10:00 AM | 8:00 PM |
| 12:00 PM | 10:00 PM |
| 2:00 PM | 12:00 AM |
| 4:00 PM | 2:00 AM |
| 6:00 PM | 4:00 AM |
| 8:00 PM | 6:00 AM |
| 10:00 PM | 8:00 AM |
Hagåtña & San Juan — Business & Scheduling Guide
Hagåtña (Guam) is a US territory and strategic Pacific military base, with key industries in US military, tourism, construction, and fishing. San Juan (Puerto Rico) is a US territory with pharmaceutical and tech manufacturing, known for pharmaceuticals, medical devices, electronics, and tourism. With a 14-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 Hagåtña and San Juan
With San Juan 14 hours behind Hagåtña, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. Guam business hours are typically 8 AM–5 PM, with a US-style business environment. Puerto Rican business hours are typically 8 AM–5 PM, with a bilingual (English/Spanish) workforce. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.
Daylight Saving Time Considerations
Neither Hagåtña nor San Juan observes Daylight Saving Time — Hagåtña stays on ChST and San Juan stays on AST year-round. This makes scheduling between these two cities simpler, as the 14-hour time difference remains constant throughout the year with no DST surprises.
Collaboration Tools & Workflow
With a 14-hour time difference, Hagåtña and San Juan teams operate in a near "follow-the-sun" model. When one team logs off, the other picks up — enabling near-24-hour productivity on shared projects. The key challenge is handoff quality: teams should document decisions in shared tools (Notion, Confluence, Linear), record video updates with Loom, and write thorough pull request descriptions. Weekly all-hands meetings require someone to take an early morning or late evening call, so the best practice is to rotate this burden fairly between Hagåtña and San Juan.
Remote Work Between Hagåtña & San Juan
Hagåtña, a key city in Guam, and San Juan, a key city in Puerto Rico, represent a common corridor for distributed teams navigating a 14-hour time difference. Remote workers and freelancers operating between these cities should plan their day around the overlap window — typically the late morning for one city and early morning or late afternoon for the other. Using a world clock widget, setting Slack status with local time, and blocking "no-meeting" deep work hours outside the overlap are essential practices for productive cross-timezone remote collaboration between Hagåtña and San Juan.
ChST to AST — Quick Reference
ChST (ChST) stands for the timezone used in Hagåtña, Guam (UTC+10). AST (AST) is the timezone used in San Juan, Puerto Rico (UTC-4). Hagåtña is 14 hours ahead of San Juan.
To convert ChST to AST, subtract 14 hours from ChST time. For example, ChST 9:00 AM = AST 7:00 PM (previous day).
Key Facts
- •Time difference: Hagåtña (UTC+10) is 14 hours ahead of San Juan (UTC-4).
- •Daylight Saving Time: Hagåtña does not observe DST (ChST). San Juan does not observe DST (AST).
- •Regions: Hagåtña is located in Guam and uses the ChST time zone. San Juan is located in Puerto Rico and uses the AST time zone.
- •Best time to call: There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
Frequently Asked Questions
What is the time difference between Hagåtña and San Juan?
Hagåtña is 14 hours ahead of San Juan.
What time is it in San Juan when it's 9 AM in Hagåtña?
When it's 9:00 AM in Hagåtña, it is 7:00 PM in San Juan (previous day).
What time is 9 PM ChST in AST?
9 PM ChST (Hagåtña time) is 7:00 AM 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 Hagåtña and San Juan?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.
How do I convert ChST to AST?
ChST (ChST) is the timezone for Hagåtña, Guam (UTC+10). AST (AST) is the timezone for San Juan, Puerto Rico (UTC-4). Hagåtña is 14 hours ahead of San Juan. Quick examples: 9 AM ChST = 7:00 PM AST, 12 PM ChST = 10:00 PM AST, 3 PM ChST = 1:00 AM AST, 6 PM ChST = 4:00 AM AST.
Is Hagåtña ahead of or behind San Juan?
Hagåtña is 14 hours ahead of San Juan. When it's noon in Hagåtña, it's 10:00 PM in San Juan (previous day).
Does Hagåtña or San Juan change clocks for Daylight Saving Time?
No, Hagåtña does not observe DST — it stays on ChST year-round. San Juan does not observe DST — it stays on AST year-round.
What time is noon in Hagåtña in San Juan time?
When it is 12:00 PM (noon) in Hagåtña (ChST), it is 10:00 PM in San Juan (AST) (previous day). This is often a popular time for scheduling lunch-hour calls across the Hagåtña–San Juan corridor.
What are the overlapping work hours between Hagåtña and San Juan?
There are no overlapping standard work hours (9 AM - 5 PM) between these two cities. This makes real-time collaboration challenging — most teams between Hagåtña and San Juan rely on asynchronous communication (Slack, Loom, email) and rotate meeting times to share the inconvenience fairly.
What timezone is Hagåtña in?
Hagåtña is in the ChST time zone (UTC+10). It is located in Guam. Hagåtña 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 Hagåtña and San Juan?
Since there are no standard overlapping work hours between Hagåtña and San Juan, the best approach is to alternate meeting times. One week, the Hagåtña team takes an early/late call; the next week, the San Juan team does. Use a scheduling tool like Calendly or Google Calendar with multiple time zones enabled to find the least disruptive time for both sides.
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