Oklahoma Time Zone

Time zones, the invisible longitudinal divisions governing our clocks, play a pivotal role in our daily lives, often more than we recognize. While they might seem arbitrary to some, these zones carry with them histories, stories, and nuances that define regions in ways beyond just the ticking of a clock. For instance the Oklahoma Time Zone.

Nestled in the heart of the United States, it functions under the Central Time Zone, but there’s more to it than just a mere adjustment of hours. This article dives into the intricate weave of the Oklahoma time zone, shedding light on its significance, historical implications, and the rhythm of life it imparts to the Sooner State.

History of Oklahoma Time Zone

The history of time zones in the United States, including the Oklahoma Time Zone, is tied to the development of the nation’s railroads and the need for standardized timekeeping. Here is a brief history of Oklahoma’s placement in the Central Time Zone:

Pre-Standardization Era: Before the late 19th century, localities often set their own local mean time based on the position of the sun. This system was adequate for most communities, but it became problematic for the burgeoning railroad industry, which needed standardized time for scheduling.

Railroad Time: Due to the complications of every town having its own local time, U.S. and Canadian railroads implemented a standardized time system on November 18, 1883. This new system was based on five time zones for North American railroads. This system was not enforced by law but was used by the railroads to keep schedules.

Standard Time Act of 1918: The U.S. Congress officially adopted the railroad time zones with the passage of the Standard Time Act on March 19, 1918. This act also established Daylight Saving Time, although the practice has been modified several times since its introduction. The act placed Oklahoma in the Central Time Zone.

Adjustments: While the borders of the U.S. time zones have been adjusted occasionally, Oklahoma has remained entirely within the Central Time Zone since the Standard Time Act of 1918.

Daylight Saving Time: Oklahoma, like most U.S. states, observes Daylight Saving Time, which means it shifts an hour ahead in the spring and reverts back in the fall. However, this practice has been a topic of debate throughout the nation, with some regions opting out of the practice altogether.

Throughout its history, Oklahoma has been influenced by its geographic location and the broader national need for standardization in timekeeping. Being centrally located in the U.S., it naturally fits within the Central Time Zone.

Read More: Arkansas Time Zone

What Time Zone in Oklahoma?

Oklahoma, known for its rich history and diverse landscapes, is nestled within the Central Time Zone (CT) of the United States. The concept of time zones, developed in the late 19th century, was a response to the need for standardized train schedules, and it subsequently shaped how communities functioned in relation to time. For Oklahoma, being part of the Central Time Zone has specific implications.

The Central Time Zone is one of the principal longitudinal divisions dictating time in North America, stretching from Canada in the north to Mexico in the south. Within this zone, the state of Oklahoma, along with others like Texas, Kansas, and parts of several others, aligns its clocks to Central Standard Time (CST) for a significant portion of the year.

However, the passage of time isn’t always steady. With the advent of daylight saving time, designed to make better use of daylight during the longer days of summer, Oklahoma, like many other states, adjusts its clocks. From the second Sunday in March to the first Sunday in November, Oklahomans set their clocks forward by one hour, observing Central Daylight Time (CDT).

Time ZoneAbbreviationsUTC/GMT Offset During Standard TimeUTC/GMT Offset During Daylight Saving TimeDaylight Saving Time UsageDaylight Saving Start DateDaylight Saving End Date
Central Standard Time (CST)Central Daylight Time (CDT)GMT/UTC – 6 hoursGMT/UTC – 5 hoursYesSunday, March 12, 2023, 2:00 AMSunday, November 5, 2023, 2:00 AM

Is Oklahoma in CST or EST?

Oklahoma, a state celebrated for its vibrant culture and historical significance, operates within the Central Standard Time (CST) zone. This is distinct from the Eastern Standard Time (EST) zone, which governs the easternmost regions of the United States.

The concept of time zones was introduced as a means to synchronize activities across vast territories. As railroads expanded and communications improved in the late 19th and early 20th centuries, the need for standardized time became evident. The U.S. was divided into several primary longitudinal time zones, each one hour apart from its neighbors.

Oklahoma’s placement in the CST zone means it shares its timekeeping with other central U.S. states, including Texas, Kansas, and parts of several others. This alignment is crucial for various reasons. Economically, it ensures that businesses in Oklahoma operate in sync with major hubs like Dallas and Chicago. Socially and culturally, it ensures that television broadcasts, national events, and even certain cultural festivities are experienced simultaneously with other parts of the central U.S.

In contrast, the Eastern Standard Time (EST) zone, which includes states like New York, Georgia, and Ohio, operates an hour ahead of CST. So, when it’s noon in Oklahoma, it’s already 1 p.m. in New York City.

Is Oklahoma in 2 Time Zones?

No, Oklahoma is entirely within the Central Time Zone (CT). It does not span two time zones. The entire state observes Central Standard Time (CST) during the standard time period and switches to Central Daylight Time (CDT) during daylight saving time. Some states in the U.S., like Texas and Oregon, do span multiple time zones, but Oklahoma is not one of them.

Read Also: New Mexico Time Zone

Does Oklahoma Observe Daylight Saving Time?

Yes, Oklahoma does observe Daylight Saving Time (DST). During Daylight Saving Time, which typically starts on the second Sunday in March and ends on the first Sunday in November, Oklahoma switches from Central Standard Time (CST) to Central Daylight Time (CDT). This means that the clocks in Oklahoma are set forward by one hour in the spring when DST begins and set back by one hour in the fall when DST ends, effectively shifting the time zone from UTC/GMT – 6 hours to UTC/GMT – 5 hours during the DST period.

Daylight Savings Time (DST) in Oklahoma

Oklahoma observes daylight saving time, as established by the Uniform Time Act of 1966. During this period, the state transitions from Central Standard Time (CST) to Central Daylight Time (CDT).

The shift begins on the second Sunday of March, when the clock is advanced from 2:00 a.m. to 3:00 a.m., resulting in a lost hour of sleep. Conversely, on the first Sunday of November, the clock is set back from 3:00 a.m. to 2:00 a.m., granting an additional hour of sleep. A simple mnemonic to recall this adjustment is: “Spring forward, fall back.”

Daylight saving time spans 34 weeks, which constitutes approximately 65% of the year.

Convert Time From the Oklahoma Time Zone to Any Time Zone

To convert the time from the Oklahoma Time Zone (Central Time) to another time zone, you’ll need to know the time difference between the two time zones. Here are some examples of converting the Oklahoma Time Zone to other time zones:

To convert to Eastern Time (ET), add 1 hour, as Eastern Time is UTC-5 during Standard Time and UTC-4 during Daylight Saving Time. For example, if it’s 3:00 PM in Oklahoma during Standard Time, it would be 4:00 PM in Eastern Time.

To convert to Pacific Time (PT), subtract 2 hours, as Pacific Time is UTC-8 during Standard Time and UTC-7 during Daylight Saving Time. For example, if it’s 3:00 PM in Oklahoma during Standard Time, it would be 1:00 PM in Pacific Time.

To convert to Central European Time (CET), add 7 hours, as CET is UTC+1. For example, if it’s 3:00 PM in Oklahoma, it would be 10:00 PM in Central European Time.

To convert to Australian Eastern Standard Time (AEST), add 16 hours, as AEST is UTC+10. For example, if it’s 3:00 PM in Oklahoma, it would be 7:00 AM the next day in Australian Eastern Standard Time.

Keep in mind that the conversion may change during Daylight Saving Time, so make sure to adjust for the appropriate time difference based on whether Daylight Saving Time is in effect or not.

Also Read: Kansas Time Zone

Major Cities in Oklahoma Time Zone and Their Time Zones

Oklahoma is primarily situated in the Central Time Zone (CT) in the United States. Here are some major cities in Oklahoma and their respective time zones:

  • Oklahoma City – Central Time Zone (CT)
  • Tulsa – Central Time Zone (CT)
  • Norman – Central Time Zone (CT)
  • Broken Arrow – Central Time Zone (CT)
  • Lawton – Central Time Zone (CT)
  • Edmond – Central Time Zone (CT)
  • Moore – Central Time Zone (CT)
  • Midwest City – Central Time Zone (CT)
  • Enid – Central Time Zone (CT)
  • Stillwater – Central Time Zone (CT)

All these cities observe Central Standard Time (CST) when Daylight Saving Time is not in effect and Central Daylight Time (CDT) when it is.

Why you should follow Oklahoma Time Zone for Travel

If you’re traveling to or within Oklahoma, there are several reasons to follow the local Oklahoma time zone (Central Time Zone). Adhering to the local time can make your journey smoother and help you acclimate quickly. Here are some reasons why:

Avoid Confusion: Knowing the local time is essential for planning activities, meetings, or appointments. Being in a different time zone can lead to mix-ups.

Flight Schedules: Airports operate based on local time. Checking-in, boarding, layovers, and departures are all scheduled using the local time of that specific airport.

Public Transportation: Whether it’s buses, trains, or other forms of public transportation, schedules will be in local time. Being aware of the local time zone ensures you don’t miss your ride.

Business Operations: If you’re traveling for business, you’ll want to be in sync with local businesses. This means being aware of their operating hours, which are based on the local time zone.

Cultural Activities: Museums, theaters, and other cultural institutions operate based on the local time zone. If you want to partake in any of these activities, you’ll need to be on Oklahoma time.

Health & Well-being: Adjusting to the local time zone can help combat jet lag. It’s generally advisable to acclimate to the local time as quickly as possible to minimize the effects of jet lag.

Related Read: Dallas Time Zone


Oklahoma’s adherence to daylight saving time, rooted in the Uniform Time Act of 1966, underscores the state’s commitment to utilizing daylight efficiently. The annual adjustments—advancing the clock in spring and setting it back in fall—have become integral to the routines of Oklahomans. This practice, covering nearly two-thirds of the year, serves as a reminder of our ongoing efforts to adapt and optimize our lives in harmony with the natural world.