Monterrey to San Marcos, TX: time difference
San Marcos, TX is 1 h ahead of Monterrey. 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.
Monterrey 10:08 10:08 AM San Marcos, TX 11:08 11:08 AM You –:–
10:08 10:08 AM
Central Standard Time · UTC-6
☀️ 06:42 · 🌙 18:12
11:08 11:08 AM
Central Daylight Time · UTC-5
☀️ 07:36 · 🌙 18:59
·
+1 h
San Marcos, TX is 1 h ahead of Monterrey.
When you, Monterrey and San Marcos, 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
🇲🇽 Monterrey
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
🇺🇸 San Marcos, 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
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇲🇽 Monterrey | 🇺🇸 San Marcos, TX |
|---|---|---|
| Local time | 10:08 | 11:08 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Central Standard Time | Central Daylight Time |
| UTC offset | UTC-6 | UTC-5 |
| Offset from Monterrey | — | +1 h |
| IANA zone | America/Monterrey | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 06:42 | 07:36 |
| Sunset | 18:12 | 18:59 |
| Daylight | 11 h 30 min | 11 h 23 min |
| People on this clock | 1,142,994 | 44,894 |
Compare Monterrey with another city
More comparisons with Monterrey: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Monterrey and San Marcos, TX: common questions
What is the time difference between Monterrey and San Marcos, TX?
San Marcos is 1 hour ahead: it uses UTC−5, while Monterrey is on UTC−6.
What time is it in San Marcos, TX, when it is 9:00 AM in Monterrey?
When it is 9:00 AM in Monterrey, it is 10:00 AM in San Marcos.
What time is it in San Marcos, TX, when it is 6:00 PM in Monterrey?
When it is 6:00 PM in Monterrey, it is 7:00 PM in San Marcos.
Is there a time when both Monterrey and San Marcos, TX, are at work?
Yes: from 9:00 AM to 5:00 PM in Monterrey (10:00 AM to 6:00 PM in San Marcos), the working days (9:00 AM–6:00 PM) overlap.
From what time in Monterrey is it tomorrow in San Marcos, TX?
Once it is 11:00 PM in Monterrey, the date in San Marcos has already changed. Until 1:00 AM in San Marcos, it is still the previous day in Monterrey.
Is the time difference between Monterrey and San Marcos, TX, the same all year?
No. Only San Marcos switches to summer time, so the gap changes twice a year. From November 1, 2026, San Marcos and Monterrey will have the same time.
