Portsmouth to Austin, TX: time difference
Austin, TX is 1 h behind Portsmouth. 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.
Portsmouth 05:57 5:57 AM Austin, TX 04:57 4:57 AM You –:–
05:57 5:57 AM
Atlantic Standard Time · UTC-4
☀️ 05:57 · 🌙 17:50
04:57 4:57 AM
Central Daylight Time · UTC-5
☀️ 07:30 · 🌙 19:07
·
−1 h
Austin, TX is 1 h behind Portsmouth.
When you, Portsmouth 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
🇩🇲 Portsmouth
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
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇩🇲 Portsmouth | 🇺🇸 Austin, TX |
|---|---|---|
| Local time | 05:57 | 04:57 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Atlantic Standard Time | Central Daylight Time |
| UTC offset | UTC-4 | UTC-5 |
| Offset from Portsmouth | — | −1 h |
| IANA zone | America/Dominica | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 05:57 | 07:30 |
| Sunset | 17:50 | 19:07 |
| Daylight | 11 h 52 min | 11 h 36 min |
| People on this clock | 3,633 | 974,447 |
Compare Portsmouth with another city
More comparisons with Portsmouth: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Portsmouth and Austin, TX: common questions
How many hours behind Portsmouth is Austin, TX?
The clocks in Austin are 1 hour behind those in Portsmouth (UTC−5 and UTC−4).
What time is it in Austin, TX, when it is 9:00 AM in Portsmouth?
When it is 9:00 AM in Portsmouth, it is 8:00 AM in Austin.
What time is it in Austin, TX, when it is 6:00 PM in Portsmouth?
When it is 6:00 PM in Portsmouth, it is 5:00 PM in Austin.
When is a good time to call Austin, TX, from Portsmouth?
Between 10:00 AM and 6:00 PM in Portsmouth – that is 9:00 AM to 5:00 PM in Austin – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Austin, TX, compared with Portsmouth?
The new day starts in Austin later: until 1:00 AM in Portsmouth, it is still the previous day there. From 11:00 PM in Austin, Portsmouth is already on the next day.
Is the time difference between Portsmouth and Austin, TX, the same all year?
No. Only Austin switches to summer time, so the gap changes twice a year. From November 1, 2026, Austin will be 2 hours behind Portsmouth.
