Lisbon to Round Rock, TX: time difference
Round Rock, TX is 6 h behind Lisbon. 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.
Lisbon 10:41 10:41 AM Round Rock, TX 04:41 4:41 AM You –:–
10:41 10:41 AM
Western European Summer Time · UTC+1
☀️ 07:49 · 🌙 18:56
04:41 4:41 AM
Central Daylight Time · UTC-5
☀️ 07:36 · 🌙 18:57
·
−6 h
Round Rock, TX is 6 h behind Lisbon.
When you, Lisbon and Round Rock, 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
🇵🇹 Lisbon
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
🇺🇸 Round Rock, TX
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 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇵🇹 Lisbon | 🇺🇸 Round Rock, TX |
|---|---|---|
| Local time | 10:41 | 04:41 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Western European Summer Time | Central Daylight Time |
| UTC offset | UTC+1 | UTC-5 |
| Offset from Lisbon | — | −6 h |
| IANA zone | Europe/Lisbon | America/Chicago |
| Daylight saving | On summer time → UTC+0, Oct 25, 01:00 | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 07:49 | 07:36 |
| Sunset | 18:56 | 18:57 |
| Daylight | 11 h 7 min | 11 h 22 min |
| People on this clock | 545,923 | 119,468 |
Compare Lisbon with another city
More comparisons with Lisbon: the time zones next to it and the far side of the clock.
Big time differences
Lisbon and Round Rock, TX: common questions
What is the time difference between Lisbon and Round Rock, TX?
Round Rock is 6 hours behind: it uses UTC−5, while Lisbon is on UTC+1.
What time is it in Round Rock, TX, at the start of the working day in Lisbon?
The working day in Lisbon starts at 9:00 AM; in Round Rock it is 3:00 AM at that moment.
What time is it in Round Rock, TX, at the end of the working day in Lisbon?
The working day in Lisbon ends at 6:00 PM; in Round Rock it is 12:00 PM at that moment.
When do working hours in Lisbon and in Round Rock, TX, overlap?
Working hours (9:00 AM–6:00 PM) overlap from 3:00 PM to 6:00 PM in Lisbon, which is 9:00 AM to 12:00 PM in Round Rock.
Until what time in Lisbon is it still yesterday in Round Rock, TX?
Before 6:00 AM in Lisbon, the date in Round Rock has not changed yet. From 6:00 PM in Round Rock, it is already the next day in Lisbon.
Does the time difference between Lisbon and Round Rock, TX, change?
Yes. Both places change their clocks, but on different dates. From October 25, 2026, Round Rock will be 5 hours behind Lisbon.
