Groton, CT to Austin, TX: time difference
Austin, TX is 1 h behind Groton, CT. 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.
Groton, CT 16:37 4:37 PM Austin, TX 15:37 3:37 PM You –:–
16:37 4:37 PM
Eastern Daylight Time · UTC-4
☀️ 07:06 · 🌙 18:01
15:37 3:37 PM
Central Daylight Time · UTC-5
☀️ 07:37 · 🌙 18:56
·
−1 h
Austin, TX is 1 h behind Groton, CT.
When you, Groton, CT 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
🇺🇸 Groton, CT
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
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Time zones side by side
| Detail | 🇺🇸 Groton, CT | 🇺🇸 Austin, TX |
|---|---|---|
| Local time | 16:37 | 15:37 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern Daylight Time | Central Daylight Time |
| UTC offset | UTC-4 | UTC-5 |
| Offset from Groton, CT | — | −1 h |
| IANA zone | America/New York | America/Chicago |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 07:06 | 07:37 |
| Sunset | 18:01 | 18:56 |
| Daylight | 10 h 55 min | 11 h 19 min |
| People on this clock | 40,115 | 974,447 |
Compare Groton, CT with another city
More comparisons with Groton, CT: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Groton, CT and Austin, TX: common questions
How far behind Groton, CT, is Austin, TX?
Austin is 1 hour behind Groton: UTC−5 against UTC−4.
What time is it in Austin, TX, when it is 9:00 AM in Groton, CT?
When it is 9:00 AM in Groton, it is 8:00 AM in Austin.
What time is it in Austin, TX, at the end of the working day in Groton, CT?
The working day in Groton ends at 6:00 PM; in Austin it is 5:00 PM at that moment.
When do working hours in Groton, CT, and in Austin, TX, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 10:00 AM to 6:00 PM in Groton, which is 9:00 AM to 5:00 PM in Austin.
When is it still the previous day in Austin, TX?
Until 1:00 AM in Groton, CT, it is still the previous day in Austin. The other way round, from 11:00 PM in Austin it is already the next day in Groton.
Does the time difference between Groton, CT, and Austin, TX, change?
No. The clocks in Groton and in Austin change on the same dates, so the difference stays 1 hour.
