Guam to Austin, TX: time difference
Austin, TX is 15 h behind Guam. 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.
Guam 12:28 12:28 PM Austin, TX 21:28 9:28 PM You –:–
12:28 12:28 PM
Chamorro Standard Time · UTC+10
☀️ 06:12 · 🌙 18:06
21:28 9:28 PM
Central Daylight Time · UTC-5
☀️ 07:30 · 🌙 19:08
·
−15 h
Austin, TX is 15 h behind Guam.
When you, Guam and Austin, TX are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇺 Guam
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
🇺🇸 Austin, TX
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 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇺 Guam | 🇺🇸 Austin, TX |
|---|---|---|
| Local time | 12:28 | 21:28 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | Chamorro Standard Time | Central Daylight Time |
| UTC offset | UTC+10 | UTC-5 |
| Offset from Guam | — | −15 h |
| IANA zone | Pacific/Guam | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 06:12 | 07:30 |
| Sunset | 18:06 | 19:08 |
| Daylight | 11 h 55 min | 11 h 38 min |
| People on this clock | 153,836 | 974,447 |
Compare Guam with another city
More comparisons with Guam: the time zones next to it and the far side of the clock.
Nearby time zones
Guam and Austin, TX: common questions
How many hours behind Guam is Austin, TX?
The clocks in Austin are 15 hours behind those in Guam (UTC−5 and UTC+10).
What time is it in Austin, TX, at the start of the working day in Guam?
The working day in Guam starts at 9:00 AM; in Austin it is 6:00 PM (the previous day) at that moment.
If it is 6:00 PM in Guam, what time is it in Austin, TX?
At 6:00 PM in Guam, clocks in Austin show 3:00 AM.
Is there a time when both Guam and Austin, TX, are at work?
No, the working days (9:00 AM–6:00 PM) do not overlap. When the day starts in Guam at 9:00 AM, it is 6:00 PM (the previous day) in Austin; the day in Austin starts at 12:00 AM (the next day) in Guam time.
Until what time in Guam is it still yesterday in Austin, TX?
Before 3:00 PM in Guam, the date in Austin has not changed yet. From 9:00 AM in Austin, it is already the next day in Guam.
Does the time gap between Guam and Austin, TX, change during the year?
Yes – daylight saving time is used in Austin but not in Guam. From November 1, 2026, Austin will be 16 hours behind Guam.
