San Jose to Groton, CT: time difference
Groton, CT is 1 h ahead of San Jose. 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.
San Jose 08:55 8:55 AM Groton, CT 09:55 9:55 AM You –:–
08:55 8:55 AM
Central Standard Time · UTC-6
☀️ 05:29 · 🌙 17:13
09:55 9:55 AM
Eastern Standard Time · UTC-5
☀️ 06:26 · 🌙 16:39
·
+1 h
Groton, CT is 1 h ahead of San Jose.
When you, San Jose and Groton, CT are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇷 San Jose
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
🇺🇸 Groton, CT
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 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇷 San Jose | 🇺🇸 Groton, CT |
|---|---|---|
| Local time | 08:55 | 09:55 |
| Local date | Friday, November 6, 2026 | Friday, November 6, 2026 |
| Time zone | Central Standard Time | Eastern Standard Time |
| UTC offset | UTC-6 | UTC-5 |
| Offset from San Jose | — | +1 h |
| IANA zone | America/Costa Rica | America/New York |
| Daylight saving | Not observed | On standard time → UTC-4, Mar 14, 03:00 |
| Sunrise | 05:29 | 06:26 |
| Sunset | 17:13 | 16:39 |
| Daylight | 11 h 44 min | 10 h 13 min |
| People on this clock | 342,188 | 40,115 |
Compare San Jose with another city
More comparisons with San Jose: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
San Jose and Groton, CT: common questions
How far ahead of San Jose is Groton, CT?
Groton is 1 hour ahead of San Jose: UTC−5 against UTC−6.
What time is it in Groton, CT, at the start of the working day in San Jose?
The working day in San Jose starts at 9:00 AM; in Groton it is 10:00 AM at that moment.
If it is 6:00 PM in San Jose, what time is it in Groton, CT?
At 6:00 PM in San Jose, clocks in Groton show 7:00 PM.
When is a good time to call Groton, CT, from San Jose?
Between 9:00 AM and 5:00 PM in San Jose – that is 10:00 AM to 6:00 PM in Groton – both places are within working hours (9:00 AM–6:00 PM).
From what time in San Jose is it tomorrow in Groton, CT?
Once it is 11:00 PM in San Jose, the date in Groton has already changed. Until 1:00 AM in Groton, it is still the previous day in San Jose.
Does the time difference between San Jose and Groton, CT, change?
Yes. The clocks change only in Groton. From March 14, 2027, Groton will be 2 hours ahead of San Jose.
