MDT to PET Converter & Meeting Planner
Quick answer: 9:00 AM MDT = 10:00 AM PET (fixed -06:00 standard offset — not DST-adjusted). Use the interactive converter below for DST-aware local-time scheduling.
Planning a call or meeting between Mountain Daylight Time (MDT) and Peru Time (PET)? You need to account for the standard time difference. Peru Time is normally 1 hours ahead of Mountain Daylight Time. Whether you are coordinating between teams in Denver and Salt Lake City and Lima and Arequipa, our live tool has you covered. Use our interactive overlap studio below to find the perfect waking hours for both regions, taking into account any seasonal Daylight Saving Time (DST) changes.
24-Hour Conversion Table
Quick reference: 12:00 AM MDT = 1:00 AM PET. The full 24-hour MDT to PET table below uses fixed standard offsets for exact abbreviation searches.
Example: 3:00 PM MDT = 4:00 PM PET.
| MDT Time | PET Time |
|---|---|
| 12:00 AM (00:00) | 1:00 AM (01:00) |
| 1:00 AM (01:00) | 2:00 AM (02:00) |
| 2:00 AM (02:00) | 3:00 AM (03:00) |
| 3:00 AM (03:00) | 4:00 AM (04:00) |
| 4:00 AM (04:00) | 5:00 AM (05:00) |
| 5:00 AM (05:00) | 6:00 AM (06:00) |
| 6:00 AM (06:00) | 7:00 AM (07:00) |
| 7:00 AM (07:00) | 8:00 AM (08:00) |
| 8:00 AM (08:00) | 9:00 AM (09:00) |
| 9:00 AM (09:00) | 10:00 AM (10:00) |
| 10:00 AM (10:00) | 11:00 AM (11:00) |
| 11:00 AM (11:00) | 12:00 PM (12:00) |
| 12:00 PM (12:00) | 1:00 PM (13:00) |
| 1:00 PM (13:00) | 2:00 PM (14:00) |
| 2:00 PM (14:00) | 3:00 PM (15:00) |
| 3:00 PM (15:00) | 4:00 PM (16:00) |
| 4:00 PM (16:00) | 5:00 PM (17:00) |
| 5:00 PM (17:00) | 6:00 PM (18:00) |
| 6:00 PM (18:00) | 7:00 PM (19:00) |
| 7:00 PM (19:00) | 8:00 PM (20:00) |
| 8:00 PM (20:00) | 9:00 PM (21:00) |
| 9:00 PM (21:00) | 10:00 PM (22:00) |
| 10:00 PM (22:00) | 11:00 PM (23:00) |
| 11:00 PM (23:00) | 12:00 AM (00:00)+1 day |
Best time to call Lima from Denver
For most work calls, compare the normal business day in Denver (MDT) with the business day in Lima (PET). MDT commonly covers North America, while PET is mainly associated with South America.
⚠️ Note: 2026-07-05 is not a normal workday in one or both regions based on their configured calendar. The overlap below should be treated as a reference, not a guaranteed office-hours window.
✅ The most practical overlap on 2026-07-05 is usually 9:00 AM - 5:00 PM MDT, which corresponds to 10:00 AM - 6:00 PM PET. This window sits inside the typical MDT workday (9:00 AM - 5:00 PM) and the PET workday (9:00 AM - 6:00 PM).
- DST Safety: MDT or PET may shift during Daylight Saving Time. Always confirm the converted time for your specific date.
- Lima Stock Exchange (BVL): 09:00-15:00 local time in Lima.
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Frequently Asked Questions
What is the time difference between MDT and PET?
During standard time, Peru Time is 1 hours ahead of Mountain Daylight Time.
When does MDT start and end?
MDT begins on the second Sunday in March at 02:00 local MST time, when clocks spring forward one hour from MST (UTC-7) to MDT (UTC-6). It ends on the first Sunday in November at 02:00 local MDT time, when clocks fall back to MST. In 2026, MDT runs from March 8 through November 1, covering the majority of the calendar year.
Is Arizona on MDT?
Most of Arizona — including Phoenix and Tucson — does not observe Daylight Saving Time and remains on MST (UTC-7) year-round under a state law in effect since 1968, meaning Arizona does not advance to MDT each March. The significant exception is the Navajo Nation, a sovereign territory spanning parts of northeastern Arizona, southeastern Utah, and northwestern New Mexico, which does observe DST and shifts to MDT on the standard federal schedule.
Does Peru observe Daylight Saving Time?
Peru does not observe Daylight Saving Time and has not done so since 1994. PET remains fixed at UTC-05:00 throughout the entire year, with no seasonal clock changes affecting business hours, market schedules, or international coordination.
How does Peru Time (PET) align with the US?
PET (UTC-05:00) is identical to US Eastern Standard Time (EST) during the Northern Hemisphere winter — Lima and New York run on the exact same clock. When the US shifts to Eastern Daylight Time (EDT, UTC-04:00) in summer, PET falls one hour behind, but a full shared workday between Peru and the US East Coast remains entirely achievable without scheduling concessions on either side.