Difference Wiki

PDT vs. EST: What's the Difference?

Edited by Sawaira Riaz || By Sara Rehman || Published on December 5, 2023
PDT (Pacific Daylight Time) is UTC-7, used in the Western US during daylight saving time, while EST (Eastern Standard Time) is UTC-5, used in the Eastern US during standard time.

Key Differences

PDT, or Pacific Daylight Time, is observed in the Pacific Time Zone of the United States during daylight saving time, typically between March and November. EST, Eastern Standard Time, is observed in the Eastern Time Zone of the United States during standard time, usually from November to March.
Sara Rehman
Dec 05, 2023
PDT is UTC-7, meaning it is 7 hours behind Coordinated Universal Time. EST is UTC-5, placing it 5 hours behind Coordinated Universal Time.
Sara Rehman
Dec 05, 2023
Regions observing PDT include parts of western United States and Canada. EST is observed in the eastern parts of the United States, parts of eastern Canada, and in certain countries in the Caribbean.
Sawaira Riaz
Dec 05, 2023
During daylight saving time, areas on PDT move their clocks forward by one hour, effectively shifting one hour of daylight from morning to evening. EST does not involve a daylight saving shift, but regions on Eastern Time shift to Eastern Daylight Time (EDT), which is UTC-4, during daylight saving months.
Sara Rehman
Dec 05, 2023
The transition between PDT and standard time (Pacific Standard Time or PST) and between EST and daylight time (EDT) can affect scheduling, particularly in activities like broadcasting, travel, and international communication.
Sara Rehman
Dec 05, 2023
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Comparison Chart

UTC Offset

UTC-7
UTC-5
Sara Rehman
Dec 05, 2023

Time Zone Region

Western United States and parts of Canada
Eastern United States, parts of Canada, some Caribbean nations
Sara Rehman
Dec 05, 2023

Daylight Saving Shift

Observed, clocks move forward an hour
Not observed during EST; regions shift to EDT during daylight saving
Sara Rehman
Dec 05, 2023

Typical Observation

Between March and November
Between November and March
Aimie Carlson
Dec 05, 2023

Impact

Affects local scheduling during daylight saving months
Affects scheduling during standard time months
Sara Rehman
Dec 05, 2023
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PDT and EST Definitions

PDT

PDT stands for Pacific Daylight Time, UTC-7.
The webinar starts at 10 AM PDT.
Sara Rehman
Nov 27, 2023

EST

EST is used in the eastern parts of the US and Canada.
Miami follows EST in the winter months.
Harlon Moss
Nov 27, 2023

PDT

PDT shifts clocks forward by one hour from standard time.
We'll adjust our clocks for PDT this weekend.
Sara Rehman
Nov 27, 2023

EST

EST is observed in the Eastern Time Zone during standard time.
New York is on EST in the winter.
Sawaira Riaz
Nov 27, 2023

PDT

PDT affects regions in western North America.
Seattle switches to PDT in March.
Harlon Moss
Nov 27, 2023

EST

EST does not involve daylight saving time.
During standard time, we're on EST, not EDT.
Sara Rehman
Nov 27, 2023

PDT

PDT is the daylight saving time in the Pacific Time Zone.
Los Angeles operates on PDT during the summer.
Sara Rehman
Nov 27, 2023

EST

EST stands for Eastern Standard Time, UTC-5.
The meeting is scheduled for 9 AM EST.
Janet White
Nov 27, 2023

PDT

PDT is used in certain parts of the United States and Canada.
Most of California is on PDT in the summer.
Janet White
Nov 27, 2023

EST

EST affects scheduling in certain US states and Canadian provinces.
The TV show airs at 8 PM EST in Toronto.
Aimie Carlson
Nov 27, 2023

EST

(obsolete) Grace; favour.
Sara Rehman
Nov 27, 2023

EST

Abbreviation of established
Sara Rehman
Nov 27, 2023

EST

Init of w:Erhard Seminars Training, a course intended to promote satisfaction with life in the present moment, as opposed to strivings to attain it.
Sara Rehman
Nov 27, 2023

EST

East.
Sara Rehman
Nov 27, 2023

EST

Standard time in the 5th time zone west of Greenwich, reckoned at the 75th meridian; used in the eastern United States
Sara Rehman
Nov 27, 2023

FAQs

Where is PDT used?

PDT is used in parts of the Western United States and Canada during daylight saving time.
Sara Rehman
Dec 05, 2023

When is PDT observed?

PDT is observed during the summer months when daylight saving time is in effect, typically from March to November.
Sara Rehman
Dec 05, 2023

When is EST observed?

EST is observed during the winter months, typically from November to March.
Janet White
Dec 05, 2023

What is the UTC offset for EST?

The UTC offset for EST is UTC -5.
Harlon Moss
Dec 05, 2023

Where is EST used?

EST is used in the Eastern part of the United States and Canada during the standard time period.
Harlon Moss
Dec 05, 2023

What is the time difference between PDT and EST?

PDT is 3 hours behind EST.
Sara Rehman
Dec 05, 2023

What is the UTC offset for PDT?

The UTC offset for PDT is UTC -7.
Janet White
Dec 05, 2023

What does PDT stand for?

PDT stands for Pacific Daylight Time.
Sara Rehman
Dec 05, 2023

What does EST stand for?

EST stands for Eastern Standard Time.
Sawaira Riaz
Dec 05, 2023

Is PDT the same as Pacific Standard Time (PST)?

No, PDT is the daylight saving time version of PST, which is one hour ahead of PST.
Janet White
Dec 05, 2023

Does EST change during daylight saving time?

Yes, during daylight saving time, EST changes to Eastern Daylight Time (EDT).
Janet White
Dec 05, 2023

Do all regions in the PDT zone observe daylight saving time?

Most regions in the PDT zone observe daylight saving time, but there are exceptions, like parts of Arizona.
Janet White
Dec 05, 2023

Are there any regions that use EST all year round?

Yes, some regions, like parts of Indiana and Arizona, use EST throughout the year.
Sara Rehman
Dec 05, 2023

How do I convert PDT to EST?

To convert PDT to EST, add 3 hours to the current PDT time.
Sara Rehman
Dec 05, 2023

Are PDT and EST observed internationally?

While PDT and EST are primarily North American time zones, similar daylight saving practices are observed in various forms worldwide.
Harlon Moss
Dec 05, 2023

What is the main purpose of EST?

The main purpose of EST is to standardize time during the winter months in the Eastern time zone.
Aimie Carlson
Dec 05, 2023

How do I convert EST to PDT?

To convert EST to PDT, subtract 3 hours from the current EST time.
Sara Rehman
Dec 05, 2023

How does the switch to PDT affect scheduling?

The switch to PDT means setting clocks forward by one hour, potentially affecting meetings and schedules with regions outside PDT.
Aimie Carlson
Dec 05, 2023

What is the main purpose of PDT?

The main purpose of PDT is to make better use of daylight during the summer months.
Sara Rehman
Dec 05, 2023

How does the switch to EST from daylight saving time affect daily life?

The switch to EST from EDT means setting clocks back by one hour, impacting daylight hours and possibly daily routines.
Harlon Moss
Dec 05, 2023
About Author
Written by
Sara Rehman
Sara Rehman is a seasoned writer and editor with extensive experience at Difference Wiki. Holding a Master's degree in Information Technology, she combines her academic prowess with her passion for writing to deliver insightful and well-researched content.
Edited by
Sawaira Riaz
Sawaira is a dedicated content editor at difference.wiki, where she meticulously refines articles to ensure clarity and accuracy. With a keen eye for detail, she upholds the site's commitment to delivering insightful and precise content.

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