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Honolulu to Reykjavik Time

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

Honolulu is 10 hours behind Reykjavik. Convert any time between Honolulu (HST) and Reykjavik (GMT) instantly.

Honolulu

United States

HST
UTC-10 · HST

Reykjavik

Iceland

GMT
UTC+0 · GMT
Honolulu is 10 hours behind Reykjavik.

Add Time Zones to Compare

Honolulu(UTC-10)
Reykjavik(UTC+0)

Time Zone Comparison

Honolulu
2:00 AM
United States · HST
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
Reykjavik
12:00 PM
Iceland · GMT
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:
Honolulu12:00 PM
Reykjavik10:00 PM

Honolulu to Reykjavik Time Conversion Table

Honolulu (HST)Reykjavik (GMT)
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

Honolulu & Reykjavik — Business & Scheduling Guide

Honolulu (United States) is a global financial and tech hub, with key industries in technology, finance, healthcare, and entertainment. Reykjavik (Iceland) is a small but highly connected Nordic island economy, known for fishing, geothermal energy, tourism, and aluminum smelting. 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 Honolulu and Reykjavik

With Reykjavik 10 hours ahead of Honolulu, 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. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. Icelandic business hours are typically 9 AM–5 PM, with one of the world's highest internet penetration rates. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.

Daylight Saving Time Considerations

Neither Honolulu nor Reykjavik observes Daylight Saving Time — Honolulu stays on HST and Reykjavik stays on GMT 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, Honolulu and Reykjavik 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 Honolulu and Reykjavik.

Remote Work Between Honolulu & Reykjavik

Honolulu, a key city in United States, and Reykjavik, a key city in Iceland, 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 Honolulu and Reykjavik.

HST to GMT — Quick Reference

HST (HST) stands for the timezone used in Honolulu, United States (UTC-10). GMT (GMT) is the timezone used in Reykjavik, Iceland (UTC+0). Honolulu is 10 hours behind Reykjavik.

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

Key Facts

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

Honolulu is 10 hours behind Reykjavik.

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

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

What time is 9 PM HST in GMT?

9 PM HST (Honolulu time) is 7:00 AM GMT (Reykjavik 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 Honolulu and Reykjavik?

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

How do I convert HST to GMT?

HST (HST) is the timezone for Honolulu, United States (UTC-10). GMT (GMT) is the timezone for Reykjavik, Iceland (UTC+0). Honolulu is 10 hours behind Reykjavik. Quick examples: 9 AM HST = 7:00 PM GMT, 12 PM HST = 10:00 PM GMT, 3 PM HST = 1:00 AM GMT, 6 PM HST = 4:00 AM GMT.

Is Honolulu ahead of or behind Reykjavik?

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

Does Honolulu or Reykjavik change clocks for Daylight Saving Time?

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

What time is noon in Honolulu in Reykjavik time?

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

What are the overlapping work hours between Honolulu and Reykjavik?

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

What timezone is Honolulu in?

Honolulu is in the HST time zone (UTC-10). It is located in United States. Honolulu does not observe Daylight Saving Time.

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.

How do I schedule a call between Honolulu and Reykjavik?

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