CDT to CST Converter
Convert time between Central Daylight Time (CDT) and Central Standard Time (CST)
Central Daylight Time (CDT)
17:58:11
Nov 11, 2025
UTC
Central Standard Time (CST)
17:58:11
Nov 11, 2025
UTC
Time Difference
Central Standard Time (CST) is 0 hours ahead of Central Daylight Time (CDT)
Select Date
Select Time
Quick Reference
| CDT | CST |
|---|---|
| 20:00 | 20:00 |
| 22:00 | 22:00 |
| 00:00 | 00:00 |
| 02:00 | 02:00 |
| 04:00 | 04:00 |
| 06:00 | 06:00 |
| 08:00 | 08:00 |
| 10:00 | 10:00 |
| 12:00 | 12:00 |
| 14:00 | 14:00 |
| 16:00 | 16:00 |
| 18:00 | 18:00 |
Related Time Zone Conversions
About CDT to CST Time Conversion
Central Daylight Time (CDT) and Central Standard Time (CST) both refer to the same geographic region, the Central Time Zone in North America. CDT is UTC-5 (observed during daylight saving time from March to November), while CST is UTC-6 (observed during standard time from November to March). CST is 1 hour behind CDT.
Understanding the difference between CDT and CST is essential for anyone working with time references in the Central region, including major cities like Chicago, Houston, Dallas, and New Orleans. This converter helps you quickly convert times between these two seasonal time designations within the same timezone region.
Common Use Cases for CDT to CST Conversion
Business & Work
- Scheduling events across seasonal timezone transitions
- Documenting historical times in the Central timezone region
- Planning business operations during daylight saving time transitions
Personal & Travel
- Understanding time differences during seasonal changes
- Planning travel within the Central timezone during transitions
- Organizing meetings when daylight saving time changes occur
Time Zone Information
Central Daylight Time (CDT)
- UTC Offset: UTC-5
- IANA Timezone: America/Chicago
- Daylight Saving: Second Sunday in March to First Sunday in November
- Major Cities: Chicago, Houston, Dallas, San Antonio, Austin, New Orleans
- Coverage: Central United States and parts of Canada and Mexico
Central Standard Time (CST)
- UTC Offset: UTC-6
- IANA Timezone: America/Chicago
- Daylight Saving: First Sunday in November to Second Sunday in March
- Major Cities: Chicago, Houston, Dallas, San Antonio, Austin, New Orleans
- Coverage: Central United States and parts of Canada and Mexico
Quick Reference: CDT to CST
8:00 AM CDT
7:00 AM CST
12:00 PM CDT
11:00 AM CST
3:00 PM CDT
2:00 PM CST
6:00 PM CDT
5:00 PM CST
Remember: CST is always 1 hour behind CDT (same timezone, different seasons)
Frequently Asked Questions
What is the time difference between CDT and CST?
Central Daylight Time (CDT) is UTC-5, while Central Standard Time (CST) is UTC-6. CST is 1 hour behind CDT. However, these times are observed in the same timezone region but at different times of the year. CDT is observed from the second Sunday in March to the first Sunday in November, while CST is observed from the first Sunday in November to the second Sunday in March.
When do CDT and CST transition?
CDT transitions to CST on the first Sunday in November at 2:00 AM. Clocks "fall back" one hour. CST transitions to CDT on the second Sunday in March at 2:00 AM. Clocks "spring forward" one hour. These transitions happen simultaneously across the entire Central timezone region.
How do I convert CDT to CST?
To convert from CDT to CST, subtract 1 hour from the CDT time. For example, if it is 12:00 PM CDT, it would be 11:00 AM CST. Keep in mind that this conversion typically only applies during the winter months when both times could theoretically be referenced.
Are CDT and CST in the same timezone?
Yes, CDT and CST both refer to the Central Time Zone in North America. They are the same geographic region but different time designations. CDT is the daylight saving time version (summer), and CST is the standard time version (winter). The IANA timezone identifier for both is America/Chicago.
Which cities observe CDT and CST?
Major cities in the Central Time Zone include Chicago, Houston, Dallas, San Antonio, Austin, New Orleans, Memphis, Kansas City, and St. Louis. All these cities observe CDT during summer and CST during winter. This applies to the central United States and parts of Canada and Mexico.
Why do we have CDT and CST instead of using one time?
The United States observes daylight saving time to make better use of daylight hours. During summer (March-November), clocks are set forward 1 hour to CDT to shift daylight to evening hours. During winter (November-March), clocks are set back to CST to align with natural sunrise and sunset times. This practice conserves energy and provides more daylight for evening activities.
Pro Tips
- • CST is 1 hour behind CDT - both are in the same Central timezone region.
- • Remember 'spring forward' (March) for CDT and 'fall back' (November) for CST.
- • Most major cities and business operations in the Central region automatically adjust for daylight saving time.
- • When scheduling across daylight saving time transitions, always confirm the current time zone being observed.
- • Some areas within the Central timezone region do not observe daylight saving time - always verify local practices.
- • Using 24-hour time format can reduce confusion when dealing with timezone transitions.
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Calculate Nyquist rate, check sampling sufficiency, analyze aliasing, and compute oversampling ratios for signal processing applications.
Beam Deflection Calculator
Calculate maximum deflection for simply supported and cantilever beams with point loads or distributed loads. Includes structural engineering formulas and design guidelines.
Bolt Torque Calculator
Calculate proper tightening torque for bolts based on material grade, preload requirements, and friction coefficients. Includes safety checks and engineering formulas.
Gear Ratio Calculator
Free professional gear ratio calculator for mechanical engineering. Calculate speed reduction, torque multiplication, compound gear trains, and mechanical advantage with real-time formulas and step-by-step solutions.
Molar Mass Calculator
Calculate molar mass and analyze chemical formulas with detailed elemental breakdown. Supports complex formulas, hydrates, parentheses, and provides mass percentages for chemistry applications.
Ideal Gas Law Calculator
Calculate pressure, volume, temperature, or moles using the ideal gas law (PV = nRT). Free calculator with multiple units, step-by-step solutions, and educational content for chemistry and physics.
Op-Amp Calculator
Calculate operational amplifier circuit parameters for inverting, non-inverting, differential, and integrator/differentiator configurations. Include gain, input/output impedance, and bandwidth calculations.
Heat Transfer Calculator
Calculate heat transfer rates for conduction, convection, and radiation. Include thermal resistance, heat exchanger analysis, and cooling calculations for engineering applications.
Transformer Turns Calculator
Calculate transformer turns ratios, primary/secondary voltages, currents, and power relationships. Include step-up/step-down calculations, impedance transformation, and efficiency calculations.
Power Electronics Calculator
Design and analyze DC-DC converters (buck, boost, buck-boost), calculate switching frequencies, inductor/capacitor values, and efficiency for power supply design.
Motor RPM Calculation
Calculate motor rotational speed from Hall-effect sensors, encoders, tachometers, and back-EMF measurements. Includes filtering, calibration, and performance analysis for motor control applications.
KVAR Calculator
Calculate required reactive power (KVAR) for power factor correction, capacitor bank sizing, and energy savings analysis for electrical systems and industrial applications.
HP to kW Motor Converter
Convert between horsepower (HP) and kilowatts (kW) for mechanical, electrical, and metric motor ratings with efficiency and load adjustments for engineering applications.
mAh to Wh Converter
Convert battery capacity between milliamp-hours (mAh) and watt-hours (Wh). Calculate energy storage for batteries, power banks, and electronic devices.
kW to kWh Converter
Convert kilowatts (kW) to kilowatt-hours (kWh) and calculate energy consumption from power and time. Estimate electricity costs for appliances and devices.
kWh to Watts Converter
Convert kilowatt-hours (kWh) to watts and calculate average power consumption from energy and time. Understand device power ratings and energy usage patterns.
Screensaver
Black Screen
A free backlight bleed tester to check dead pixels, backlight bleeding. Test monitor, laptop, mobile screen or other display issues.
White Screen
Quickly detect dead pixels, screen flicker, or backlight bleed on any monitor with our advanced display testing tool.
Red Screen
Spot dead pixels, color uniformity issues, or backlight bleeding fast-ensure your screen quality with our pixel checker.
Green Screen
Instantly check for dead pixels, backlight bleed, or display defects to guarantee flawless screen performance.
Blue Screen
Test your monitor for dead pixels, backlight bleeding, and color inconsistencies in seconds with our display diagnostic tool.
Yellow Screen
Identify dead pixels, uneven backlighting, or screen defects easily-optimize your monitor's display quality now.
Purple Screen
Find and fix dead pixels, backlight bleeding, or display issues using our comprehensive screen testing solution.
Cyan Screen
Ensure perfect screen quality by detecting dead pixels, backlight bleed, and other monitor issues instantly.
Orange Screen
Diagnose dead pixels, backlight bleeding, or display problems quickly-improve your monitor's performance and viewing experience.
Pink Screen
Uncover dead pixels, backlight bleed, or screen defects fast with our user-friendly display testing tool.
Brown Screen
Verify your screen for dead pixels, backlight bleeding, or color issues to maintain top display performance.
Gray Screen
Easily detect dead pixels, backlight bleed, and other screen issues to ensure your display's optimal quality.
Lime Screen
Quickly identify and troubleshoot dead pixels, backlight bleeding, and display defects for a flawless viewing experience.
Time Screen
Display the local time on your screensaver, automatically adjusting to your current time zone for accurate, real-time clock display.
Date Screen
A screensaver that displays the current date and time. Real-time clock display on your desktop or device.
Clock Screen
Elegant clock screensaver displaying the current time with customizable styles, perfect for adding a sleek look to your screen.
Utilities
Webcam Tester
Quickly test your webcam and verify camera settings to ensure optimal video quality and proper device functionality.
Microphone Test
Test your microphone and verify settings to ensure clear audio quality and proper device performance for free.
Flashlight Tester
Test your flashlight and verify settings to ensure optimal lighting and proper device functionality for free.
Morse Code Translator
Free online Morse code generator. Convert text to Morse code, e.g.: SOS in morse code, and vice versa.
Cookie Manager
View, edit, and manage your browser cookies effortlessly to control privacy, enhance security, and customize your browsing experience.
Credit Card Number Validation
Validate credit card numbers using the Luhn algorithm to ensure they are valid and secure.
Online Tally Counter
Free online tally counter with multiple counters, labels, and total calculation. Perfect for counting, tracking, and tallying various items.
Spacebar Counter
Simple spacebar counter - press spacebar or click + button to count. Perfect for counting repetitions, events, or any activity.
Password Strength Tester
Test your password strength and learn how secure your password is. Get real-time feedback and tips to create stronger passwords.
Website Screenshot
Generate screenshots of websites by entering a URL, with options for different device viewports (mobile, tablet, desktop) and full-page captures.
Color Blindness Simulator
Simulate how colors appear to users with different types of color blindness to ensure designs are accessible to users with color vision deficiencies.
Weight Tracker
Track and compare weight progress for multiple users. Add, edit, and delete weight records with visual progress reports and user comparison.
Printable
Printable Calendar
Generate and download printable monthly calendars for any month and year. Perfect for planning, organizing, and printing.
January 2025 Calendar
Generate and download printable January 2025 Calendar. Perfect for planning, organizing, and printing.
February 2025 Calendar
Generate and download printable February 2025 Calendar. Perfect for planning, organizing, and printing.
March 2025 Calendar
Generate and download printable March 2025 Calendar. Perfect for planning, organizing, and printing.
April 2025 Calendar
Generate and download printable April 2025 Calendar. Perfect for planning, organizing, and printing.
May 2025 Calendar
Generate and download printable May 2025 Calendar. Perfect for planning, organizing, and printing.
June 2025 Calendar
Generate and download printable June 2025 Calendar. Perfect for planning, organizing, and printing.
July 2025 Calendar
Generate and download printable July 2025 Calendar. Perfect for planning, organizing, and printing.
August 2025 Calendar
Generate and download printable August 2025 Calendar. Perfect for planning, organizing, and printing.
September 2025 Calendar
Generate and download printable September 2025 Calendar. Perfect for planning, organizing, and printing.
October 2025 Calendar
Generate and download printable October 2025 Calendar. Perfect for planning, organizing, and printing.
November 2025 Calendar
Generate and download printable November 2025 Calendar. Perfect for planning, organizing, and printing.
December 2025 Calendar
Generate and download printable December 2025 Calendar. Perfect for planning, organizing, and printing.
January 2026 Calendar
Generate and download printable January 2026 Calendar. Perfect for planning, organizing, and printing.
February 2026 Calendar
Generate and download printable February 2026 Calendar. Perfect for planning, organizing, and printing.
March 2026 Calendar
Generate and download printable March 2026 Calendar. Perfect for planning, organizing, and printing.