PET to EST Time Converter
EST is 1 hour ahead of PET. PET is UTC-5:00, and The US East Coast is currently on EDT (UTC-4:00).
Best Time to Call Between PET and EST
Both zones are inside normal business hours between 9:00 AM and 4:00 PM PET — that's 10:00 AM to 5:00 PM EST. That's a 7-hour window.
both at work PET only EST only neither — hours along the strip are PET.
Common Times Converted
PET on the left, EST on the right.
PET to EST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| PET | EST | Working hours |
|---|---|---|
| 12:00 AM | 1:00 AM | — |
| 1:00 AM | 2:00 AM | — |
| 2:00 AM | 3:00 AM | — |
| 3:00 AM | 4:00 AM | — |
| 4:00 AM | 5:00 AM | — |
| 5:00 AM | 6:00 AM | — |
| 6:00 AM | 7:00 AM | — |
| 7:00 AM | 8:00 AM | — |
| 8:00 AM | 9:00 AM | EST only |
| 9:00 AM | 10:00 AM | Both zones |
| 10:00 AM | 11:00 AM | Both zones |
| 11:00 AM | 12:00 PM | Both zones |
| 12:00 PM | 1:00 PM | Both zones |
| 1:00 PM | 2:00 PM | Both zones |
| 2:00 PM | 3:00 PM | Both zones |
| 3:00 PM | 4:00 PM | Both zones |
| 4:00 PM | 5:00 PM | PET only |
| 5:00 PM | 6:00 PM | — |
| 6:00 PM | 7:00 PM | — |
| 7:00 PM | 8:00 PM | — |
| 8:00 PM | 9:00 PM | — |
| 9:00 PM | 10:00 PM | — |
| 10:00 PM | 11:00 PM | — |
| 11:00 PM | 12:00 AM next day | — |
What PET and EST Actually Are
PET — Peru Time
Lima, Arequipa, Trujillo. Standing at UTC-5:00 as written, and the region does not change its clocks, so that offset holds all year.
Peru sits at UTC-5 year-round despite spanning longitudes that would suggest otherwise, and has not used daylight saving since a short trial in the 1990s.
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
What This Means in Practice
This gap is not fixed
EST changes its clocks and PET does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Close enough to share a working day
At only 1 hour apart, the two working days overlap almost completely. Scheduling is barely constrained by the difference.
Major Cities in Each Zone
Cities on PET
Cities on EST
Frequently Asked Questions
What is the time difference between PET and EST?
EST is 1 hour ahead of PET. That is the live figure. Taken strictly as written, the gap between PET and EST is — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM PET in EST?
9:00 AM PET is 10:00 AM EST.
What are the best hours to schedule a call between PET and EST?
Between 9:00 AM and 4:00 PM PET, which is 10:00 AM to 5:00 PM EST. Both sides are inside normal business hours through that window.
Does the difference between PET and EST change during the year?
Yes. EST observes daylight saving and PET does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.