Calgary to Arecibo: time difference
Arecibo is 2 h ahead of Calgary. 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.
Calgary 15:00 3:00 PM Arecibo 17:00 5:00 PM You –:–
15:00 3:00 PM
Mountain Daylight Time · UTC-6
☀️ 08:04 · 🌙 18:41
17:00 5:00 PM
Atlantic Standard Time · UTC-4
☀️ 06:22 · 🌙 18:04
·
+2 h
Arecibo is 2 h ahead of Calgary.
When you, Calgary and Arecibo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Calgary
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
🇵🇷 Arecibo
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 1 1 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Calgary | 🇵🇷 Arecibo |
|---|---|---|
| Local time | 15:00 | 17:00 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Mountain Daylight Time | Atlantic Standard Time |
| UTC offset | UTC-6 | UTC-4 |
| Offset from Calgary | — | +2 h |
| IANA zone | America/Edmonton | America/Puerto Rico |
| Daylight saving | On summer time → UTC-7, Nov 1, 01:00 | Not observed |
| Sunrise | 08:04 | 06:22 |
| Sunset | 18:41 | 18:04 |
| Daylight | 10 h 37 min | 11 h 42 min |
| People on this clock | 1,267,344 | 39,634 |
Compare Calgary with another city
More comparisons with Calgary: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Calgary and Arecibo: common questions
How far ahead of Calgary is Arecibo?
Arecibo is 2 hours ahead of Calgary: UTC−4 against UTC−6.
What time is it in Arecibo when it is 9:00 AM in Calgary?
When it is 9:00 AM in Calgary, it is 11:00 AM in Arecibo.
If it is 6:00 PM in Calgary, what time is it in Arecibo?
At 6:00 PM in Calgary, clocks in Arecibo show 8:00 PM.
When is a good time to call Arecibo from Calgary?
Between 9:00 AM and 4:00 PM in Calgary – that is 11:00 AM to 6:00 PM in Arecibo – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Arecibo compared with Calgary?
The new day starts in Arecibo earlier: at 10:00 PM in Calgary it is already midnight there. Until 2:00 AM in Arecibo, Calgary is still on the previous day.
Does the time gap between Calgary and Arecibo change during the year?
No, the clocks change neither in Calgary nor in Arecibo, so the gap is 2 hours all year round.
