PET to CST Time Converter
PET and CST are on the same offset right now. There is no time difference between them today.
Best Time to Call Between PET and CST
Both zones are inside normal business hours between 9:00 AM and 5:00 PM PET — that's 9:00 AM to 5:00 PM CST. That's an 8-hour window.
both at work PET only CST only neither — hours along the strip are PET.
Common Times Converted
PET on the left, CST on the right.
PET to CST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| PET | CST | Working hours |
|---|---|---|
| 12:00 AM | 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 | 9:00 AM | Both zones |
| 10:00 AM | 10:00 AM | Both zones |
| 11:00 AM | 11:00 AM | Both zones |
| 12:00 PM | 12:00 PM | Both zones |
| 1:00 PM | 1:00 PM | Both zones |
| 2:00 PM | 2:00 PM | Both zones |
| 3:00 PM | 3:00 PM | Both zones |
| 4:00 PM | 4:00 PM | Both zones |
| 5:00 PM | 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 | — |
What PET and CST 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.
CST — Central Standard Time
Chicago, Houston, Dallas, Mexico City, Winnipeg. Standing at UTC-6:00 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 CST. CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.
Saskatchewan sits inside the Central zone but never changes its clocks, so it matches CST in winter and its neighbors' MDT in summer.
What This Means in Practice
This gap is not fixed
CST 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.
Same clock, two names
PET and CST currently show the same time, so no conversion is needed today. They are separate labels because the regions behind them do not always stay in step.
Major Cities in Each Zone
Cities on PET
Cities on CST
Frequently Asked Questions
What is the time difference between PET and CST?
PET and CST are currently on the same offset, so there is no difference between them right now.
What is 9:00 AM PET in CST?
9:00 AM PET is 9:00 AM CST.
What are the best hours to schedule a call between PET and CST?
Between 9:00 AM and 5:00 PM PET, which is 9:00 AM to 5:00 PM CST. Both sides are inside normal business hours through that window.
Does the difference between PET and CST change during the year?
Yes. CST 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 CST always mean Central Standard Time?
CST also stands for China Standard Time (UTC+8) and Cuba Standard Time (UTC-5). This page covers the North American one.