Medellin to Waltham, MA: time difference
Waltham, MA is 1 h ahead of Medellin. 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.
Medellin 08:13 8:13 AM Waltham, MA 09:13 9:13 AM You –:–
08:13 8:13 AM
Colombia Standard Time · UTC-5
☀️ 05:49 · 🌙 17:47
09:13 9:13 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 18:00
·
+1 h
Waltham, MA is 1 h ahead of Medellin.
When you, Medellin and Waltham, MA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇴 Medellin
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
🇺🇸 Waltham, MA
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 | 🇨🇴 Medellin | 🇺🇸 Waltham, MA |
|---|---|---|
| Local time | 08:13 | 09:13 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Colombia Standard Time | Eastern Daylight Time |
| UTC offset | UTC-5 | UTC-4 |
| Offset from Medellin | — | +1 h |
| IANA zone | America/Bogota | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 05:49 | 07:02 |
| Sunset | 17:47 | 18:00 |
| Daylight | 11 h 58 min | 10 h 58 min |
| People on this clock | 2,486,723 | 60,636 |
Compare Medellin with another city
More comparisons with Medellin: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Medellin and Waltham, MA: common questions
How many hours ahead of Medellin is Waltham, MA?
The clocks in Waltham are 1 hour ahead of those in Medellin (UTC−4 and UTC−5).
What time is it in Waltham, MA, at the start of the working day in Medellin?
The working day in Medellin starts at 9:00 AM; in Waltham it is 10:00 AM at that moment.
What time is it in Waltham, MA, when it is 6:00 PM in Medellin?
When it is 6:00 PM in Medellin, it is 7:00 PM in Waltham.
When is a good time to call Waltham, MA, from Medellin?
Between 9:00 AM and 5:00 PM in Medellin – that is 10:00 AM to 6:00 PM in Waltham – both places are within working hours (9:00 AM–6:00 PM).
When is it already the next day in Waltham, MA?
From 11:00 PM in Medellin it is already the next day in Waltham. The other way round, until 1:00 AM in Waltham it is still the previous day in Medellin.
Does the time difference between Medellin and Waltham, MA, change?
Yes. The clocks change only in Waltham. From November 1, 2026, Waltham and Medellin will have the same time.
