Castle Rock, CO to Austin, TX: time difference
Austin, TX is 1 h ahead of Castle Rock, CO. 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.
Castle Rock, CO 12:17 12:17 PM Austin, TX 13:17 1:17 PM You –:–
12:17 12:17 PM
Mountain Daylight Time · UTC-6
☀️ 07:05 · 🌙 18:29
13:17 1:17 PM
Central Daylight Time · UTC-5
☀️ 07:30 · 🌙 19:07
·
+1 h
Austin, TX is 1 h ahead of Castle Rock, CO.
When you, Castle Rock, CO 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
🇺🇸 Castle Rock, CO
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
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
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Time zones side by side
| Detail | 🇺🇸 Castle Rock, CO | 🇺🇸 Austin, TX |
|---|---|---|
| Local time | 12:17 | 13:17 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Mountain Daylight Time | Central Daylight Time |
| UTC offset | UTC-6 | UTC-5 |
| Offset from Castle Rock, CO | — | +1 h |
| IANA zone | America/Denver | America/Chicago |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 07:05 | 07:30 |
| Sunset | 18:29 | 19:07 |
| Daylight | 11 h 25 min | 11 h 36 min |
| People on this clock | 73,158 | 974,447 |
Compare Castle Rock, CO with another city
More comparisons with Castle Rock, CO: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Castle Rock, CO and Austin, TX: common questions
How far ahead of Castle Rock, CO, is Austin, TX?
Austin is 1 hour ahead of Castle Rock: UTC−5 against UTC−6.
If it is 9:00 AM in Castle Rock, CO, what time is it in Austin, TX?
At 9:00 AM in Castle Rock, clocks in Austin show 10:00 AM.
What time is it in Austin, TX, at the end of the working day in Castle Rock, CO?
The working day in Castle Rock ends at 6:00 PM; in Austin it is 7:00 PM at that moment.
When is a good time to call Austin, TX, from Castle Rock, CO?
Between 9:00 AM and 5:00 PM in Castle Rock – that is 10:00 AM to 6:00 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 Castle Rock, CO?
The new day starts in Austin earlier: at 11:00 PM in Castle Rock it is already midnight there. Until 1:00 AM in Austin, Castle Rock is still on the previous day.
Does the time gap between Castle Rock, CO, and Austin, TX, change during the year?
No – both places switch to and from summer time on the same dates, so the gap stays 1 hour.
