CDT — Central Daylight Time

CDT

Central Daylight Time

UTC-5 Daylight saving ↔ CST

US & Canada central (summer)

Now in Chicago:

Quick facts

Abbreviation
CDT
Full name
Central Daylight Time
UTC offset
UTC-5
Type
Daylight saving time
Seasonal pair
CST (UTC-6)
Used in
US & Canada central (summer)
Example zone
America/Chicago

Cities that use CDT

About CDT

CDT is the abbreviation for Central Daylight Time, a time zone offset of UTC-5. It applies in US & Canada central (summer). It is the daylight-saving half of the year; in winter the same region switches to CST (UTC-6).

Time-zone abbreviations are convenient but not unique or official — several codes are shared by more than one zone. When precision matters, use the underlying IANA zone name (for example America/Chicago) or the UTC offset UTC-5 instead.

Frequently asked questions

What does CDT stand for?
CDT stands for Central Daylight Time. It is UTC-5, used in US & Canada central (summer).
What is the UTC offset of CDT?
CDT (Central Daylight Time) is UTC-5, meaning it is 5 hours behind Coordinated Universal Time.
What is the standard-time version of CDT?
CDT is the summer (daylight saving) abbreviation. Its counterpart is CST (Central Standard Time, UTC-6), used in the other half of the year.

See also: all time zone abbreviations