CST to PET Time Converter
CST and PET are on the same offset right now. There is no time difference between them today.
Best Time to Call Between CST and PET
Both zones are inside normal business hours between 9:00 AM and 5:00 PM CST — that's 9:00 AM to 5:00 PM PET. That's an 8-hour window.
both at work CST only PET only neither — hours along the strip are CST.
Common Times Converted
CST on the left, PET on the right.
CST to PET: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| CST | PET | 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 CST and PET Actually Are
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.
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.
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
CST and PET 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 CST
Cities on PET
Frequently Asked Questions
What is the time difference between CST and PET?
CST and PET are currently on the same offset, so there is no difference between them right now.
What is 9:00 AM CST in PET?
9:00 AM CST is 9:00 AM PET.
What are the best hours to schedule a call between CST and PET?
Between 9:00 AM and 5:00 PM CST, which is 9:00 AM to 5:00 PM PET. Both sides are inside normal business hours through that window.
Does the difference between CST and PET 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.