About CST to EST Time
CST covers Chicago, Dallas, Houston, Mexico City and Winnipeg. EST covers New York, Toronto, Atlanta, Miami and Boston.
Working days overlap between 09:00 and 17:00 CST, which is 10:00–18:00 in EST. That window is where calls land without anyone working late.
Both regions use daylight saving, so the gap holds for most of the year — except for the week or two each spring and autumn when they switch on different dates.
How it works
Eastern Time (New York) is always 1 hour ahead of Central Time (Chicago).
- Take the CST time you want to convert.
- Add 1 hour.
- Roll the date forward or back if the result crosses midnight.
Neither side changes its clocks relative to the other, so this gap holds all year.
Zone details: CST is −6 in winter and −5 in summer (UTC), EST is −5 in winter and −4 in summer.
Examples
A working day in CST, seen from EST:
| CST | EST |
|---|---|
| 09:00 CST | 10:00 EST |
| 12:00 CST | 13:00 EST |
| 15:00 CST | 16:00 EST |
| 18:00 CST | 19:00 EST |
| 21:00 CST | 22:00 EST |
Meetings usually work best where the two working days overlap. Drag the timeline above to see the overlap for any hour, or use the full time zone converter for any other pair of cities.
CST to EST Time: frequently asked questions
- What is the time difference between CST and EST?
- EST is 1 hour ahead of CST in standard time (CST is UTC−6, EST is UTC−5). Both zones change clocks on the same US dates, so the 1 hour difference stays the same all year.
- What is 9 AM CST in EST?
- 9:00 AM CST is 10:00 AM EST (standard time).
- Where is CST used?
- Central Standard Time (UTC−6) is used in the US Central (Chicago, Dallas).
- Where is EST used?
- Eastern Standard Time (UTC−5) is used in US East Coast (New York, Miami).