EDT meaning in Space Science ?

Answer: What is Eastern Daylight Time mean?

The Eastern Time Zone (ET) is a time zone encompassing part or all of 23 states in the eastern part of the United States, parts of eastern Canada, the state of Quintana Roo in Mexico, Panama and Colombia, mainland Ecuador, Peru, and a small portion of westernmost Brazil in South America, along with certain Caribbean and Atlantic islands.

Places that use:

Eastern Standard Time (EST), when observing standard time (autumn/winter), are five hours behind Coordinated Universal Time (UTC−05:00).Eastern Daylight Time (EDT), when observing daylight saving time (spring/summer), are four hours behind Coordinated Universal Time (UTC−04:00).

On the second Sunday in March, at 2:00 a.m. EST, clocks are advanced to 3:00 a.m. EDT leaving a one-hour "gap". On the first Sunday in November, at 2:00 a.m. EDT, clocks are moved back to 1:00 a.m. EST, thus "duplicating" one hour. Southern parts of the zone (Panama and the Caribbean) do not observe daylight saving time.

reference

Full Form	Category
Engineering Design Team	Academic & Science
Electronic Disturbance Theater	Academic & Science
Engineering Design Technologies	Academic & Science
Engineering Development Test	Business
Estimated Delivery Time	Business
1,2-ethane Dithiol	Chemistry
Enterprise Development And Test	Community
Evangelical Dictionary of Theology	Community
Equitable Distribution of Teachers	Community
Engineering Development Trust	Community
European Deaf Telephone	Computer and Networking
Electronic Display Terminal	Computing
Electronic Data Transfer	Computing
External Disabled Time	Computing
Enumerated Data Type	Computing
External Editor Definition	Computing
Enzymatic Deinking Technologies	Computing
Emerging Display Technologies	Computing
Default Settings (vax Edt Editor)	File Type
External Editors Definitions (dn)	File Type
Emergency Dump Tank	General
Estimated Departure Time	General
Endless Dimension Translator	General
Estimated Delivery Timebrbrbrone	General
Early Decay Time	General
Escalating Density Training	General
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Erythrocyte Density Test	General
Eastern Day Time	General
Extra Day Trip	General
Electric Drive Technologies	General
Earth Dreams Technology	General
Extra Deep Tread	General
E-Drive Technology	General
Essential Driver Training	General
Express Deployment Tool	General
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Event Dispatch Thread	General
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Emplois Du Temps	General
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Effective Draft Temperature	General
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Exam Developer Template	General
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Everyday Diesel Treatment	General
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Emergency Diagnostic Technician	International
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English Diagnostic Test	International
End Delivery Tonnage	Measurement Unit
Enhanced Dental Team	Medical
Emergency Dental Technician	Medical
Electronic Document Transfer	Medical
Emergency Duty Team	Medical
End-Diastolic Thickness	Medical
External Data Transfer	Medical
Experiential Dynamic Therapy	Medical
Executive Director for Tmde (test, Measurement, and Diagnostic Equipment)	Military and Defence
Energy Dissipation Test	Military and Defence
Engineering Data Transmittal	Military and Defence
Edit Data Transmission	Networking
Equivalent Difference Transmission	Physics Related
Eastern Daylight Time	Space Science
Engineering Design Test	Space Science
Explosive Duct Tape	Space Science
Electrostatic Dehumidification Technology	Technology
Eastern Daylight Time [utc - 0400]	Time