Agana Heights to Tonga: time difference
Tonga is 3 h ahead of Agana Heights. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Agana Heights 21:52 9:52 PM Tonga 00:52 12:52 AM You –:–
21:52 9:52 PM
Chamorro Standard Time · UTC+10
☀️ 06:12 · 🌙 18:06
00:52 12:52 AM
Tonga Standard Time · UTC+13
☀️ 06:14 · 🌙 18:43
·
+3 h
Tonga is 3 h ahead of Agana Heights.
When you, Agana Heights and Tonga are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇺 Agana Heights
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇹🇴 Tonga
3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM 1 1 AM 2 2 AM
📍 Your time
- Asleep
- Early
- Working hours
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Time zones side by side
| Detail | 🇬🇺 Agana Heights | 🇹🇴 Tonga |
|---|---|---|
| Local time | 21:52 | 00:52 |
| Local date | Saturday, October 10, 2026 | Sunday, October 11, 2026 |
| Time zone | Chamorro Standard Time | Tonga Standard Time |
| UTC offset | UTC+10 | UTC+13 |
| Offset from Agana Heights | — | +3 h |
| IANA zone | Pacific/Guam | Pacific/Tongatapu |
| Daylight saving | Not observed | Not observed |
| Sunrise | 06:12 | 06:14 |
| Sunset | 18:06 | 18:43 |
| Daylight | 11 h 55 min | 12 h 28 min |
| People on this clock | 3,940 | 108,020 |
Compare Agana Heights with another city
More comparisons with Agana Heights: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Agana Heights and Tonga: common questions
How many hours ahead of Agana Heights is Tonga?
The clocks in Tonga are 3 hours ahead of those in Agana Heights (UTC+13 and UTC+10).
What time is it in Tonga when it is 9:00 AM in Agana Heights?
When it is 9:00 AM in Agana Heights, it is 12:00 PM in Tonga.
What time is it in Tonga at the end of the working day in Agana Heights?
The working day in Agana Heights ends at 6:00 PM; in Tonga it is 9:00 PM at that moment.
Is there a time when both Agana Heights and Tonga are at work?
Yes: from 9:00 AM to 3:00 PM in Agana Heights (12:00 PM to 6:00 PM in Tonga), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Tonga compared with Agana Heights?
The new day starts in Tonga earlier: at 9:00 PM in Agana Heights it is already midnight there. Until 3:00 AM in Tonga, Agana Heights is still on the previous day.
Does the time difference between Agana Heights and Tonga change?
No. Neither place uses daylight saving time, so the difference stays 3 hours all year.
