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Reykjavik to Hagåtña Time

GMT to ChST Converter — 9 AM GMT is 7:00 PM ChST

Reykjavik is 10 hours behind Hagåtña. Convert any time between Reykjavik (GMT) and Hagåtña (ChST) instantly.

Reykjavik

Iceland

GMT
UTC+0 · GMT

Hagåtña

Guam

ChST
UTC+10 · ChST
Reykjavik is 10 hours behind Hagåtña.

Add Time Zones to Compare

Reykjavik(UTC+0)
Hagåtña(UTC+10)

Time Zone Comparison

Reykjavik
12:00 PM
Iceland · GMT
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
Hagåtña
10:00 PM
Guam · ChST
10:00 PM
10amWorking hours
11amWorking hours
12pmWorking hours
1pmWorking hours
2pmWorking hours
3pmWorking hours
4pmWorking hours
5pmEvening
6pmEvening
7pmEvening
8pmEvening
9pmNight
10pmNight
11pmNight
12amNight
1amNight
2amNight
3amNight
4amNight
5amNight
6amNight
7amNight
8amNight
9amWorking hours
Working
Evening
Night
Now
Selected Time
Minutes:
Reykjavik12:00 PM
Hagåtña10:00 PM

Reykjavik to Hagåtña Time Conversion Table

Reykjavik (GMT)Hagåtña (ChST)
12:00 AM10:00 AM
2:00 AM12:00 PM
4:00 AM2:00 PM
6:00 AM4:00 PM
8:00 AM6:00 PM
10:00 AM8:00 PM
12:00 PM10:00 PM
2:00 PM12:00 AM
4:00 PM2:00 AM
6:00 PM4:00 AM
8:00 PM6:00 AM
10:00 PM8:00 AM
Working hours (9 AM - 5 PM)
Evening (5 PM - 9 PM)
Night

Reykjavik & Hagåtña — Business & Scheduling Guide

Reykjavik (Iceland) is a small but highly connected Nordic island economy, with key industries in fishing, geothermal energy, tourism, and aluminum smelting. Hagåtña (Guam) is a US territory and strategic Pacific military base, known for US military, tourism, construction, and fishing. With a 10-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 Reykjavik and Hagåtña

With Hagåtña 10 hours ahead of Reykjavik, 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. Icelandic business hours are typically 9 AM–5 PM, with one of the world's highest internet penetration rates. Guam business hours are typically 8 AM–5 PM, with a US-style business environment. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.

Daylight Saving Time Considerations

Neither Reykjavik nor Hagåtña observes Daylight Saving Time — Reykjavik stays on GMT and Hagåtña stays on ChST year-round. This makes scheduling between these two cities simpler, as the 10-hour time difference remains constant throughout the year with no DST surprises.

Collaboration Tools & Workflow

With a 10-hour time difference, Reykjavik and Hagåtña 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 Reykjavik and Hagåtña.

Remote Work Between Reykjavik & Hagåtña

Reykjavik, a key city in Iceland, and Hagåtña, a key city in Guam, represent a common corridor for distributed teams navigating a 10-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 Reykjavik and Hagåtña.

GMT to ChST — Quick Reference

GMT (GMT) stands for the timezone used in Reykjavik, Iceland (UTC+0). ChST (ChST) is the timezone used in Hagåtña, Guam (UTC+10). Reykjavik is 10 hours behind Hagåtña.

To convert GMT to ChST, add 10 hours to GMT time. For example, GMT 9:00 AM = ChST 7:00 PM.

Key Facts

  • Time difference: Reykjavik (UTC+0) is 10 hours behind Hagåtña (UTC+10).
  • Daylight Saving Time: Reykjavik does not observe DST (GMT). Hagåtña does not observe DST (ChST).
  • Regions: Reykjavik is located in Iceland and uses the GMT time zone. Hagåtña is located in Guam and uses the ChST 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 Reykjavik and Hagåtña?

Reykjavik is 10 hours behind Hagåtña.

What time is it in Hagåtña when it's 9 AM in Reykjavik?

When it's 9:00 AM in Reykjavik, it is 7:00 PM in Hagåtña.

What time is 9 PM GMT in ChST?

9 PM GMT (Reykjavik time) is 7:00 AM ChST (Hagåtña 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 Reykjavik and Hagåtña?

There are no overlapping standard work hours (9 AM - 5 PM) between these two cities.

How do I convert GMT to ChST?

GMT (GMT) is the timezone for Reykjavik, Iceland (UTC+0). ChST (ChST) is the timezone for Hagåtña, Guam (UTC+10). Reykjavik is 10 hours behind Hagåtña. Quick examples: 9 AM GMT = 7:00 PM ChST, 12 PM GMT = 10:00 PM ChST, 3 PM GMT = 1:00 AM ChST, 6 PM GMT = 4:00 AM ChST.

Is Reykjavik ahead of or behind Hagåtña?

Reykjavik is 10 hours behind Hagåtña. When it's noon in Reykjavik, it's 10:00 PM in Hagåtña.

Does Reykjavik or Hagåtña change clocks for Daylight Saving Time?

No, Reykjavik does not observe DST — it stays on GMT year-round. Hagåtña does not observe DST — it stays on ChST year-round.

What time is noon in Reykjavik in Hagåtña time?

When it is 12:00 PM (noon) in Reykjavik (GMT), it is 10:00 PM in Hagåtña (ChST). This is often a popular time for scheduling lunch-hour calls across the Reykjavik–Hagåtña corridor.

What are the overlapping work hours between Reykjavik and Hagåtña?

There are no overlapping standard work hours (9 AM - 5 PM) between these two cities. This makes real-time collaboration challenging — most teams between Reykjavik and Hagåtña rely on asynchronous communication (Slack, Loom, email) and rotate meeting times to share the inconvenience fairly.

What timezone is Reykjavik in?

Reykjavik is in the GMT time zone (UTC+0). It is located in Iceland. Reykjavik does not observe Daylight Saving Time.

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.

How do I schedule a call between Reykjavik and Hagåtña?

Since there are no standard overlapping work hours between Reykjavik and Hagåtña, the best approach is to alternate meeting times. One week, the Reykjavik team takes an early/late call; the next week, the Hagåtña 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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