EDT
Eastern Daylight Time
UTC−4 — Observes daylight saving time
Abbreviation
EDT
UTC Offset
UTC−4
Full Name
Eastern Daylight Time
DST
Yes
About EDT — Eastern Daylight Time
Eastern Daylight Time (EDT) is the daylight saving time zone at UTC−4, observed in the eastern United States and Canada from the second Sunday in March to the first Sunday in November. During EDT, clocks are set 1 hour ahead of Eastern Standard Time (EST, UTC−5) to extend evening daylight. EDT is active for approximately 7–8 months of the year—longer than EST—making it the dominant offset for eastern North America for most of the calendar year.
Countries Using EDT
- United States (eastern states, summer)
- Canada (Ontario, Quebec, summer)
Major Cities in EDT
Conversion Examples for EDT
| UTC Time | EDT (UTC−4) |
|---|---|
| 00:00 UTC | 20:00 EDT |
| 06:00 UTC | 02:00 EDT |
| 09:00 UTC | 05:00 EDT |
| 12:00 UTC | 08:00 EDT |
| 15:00 UTC | 11:00 EDT |
| 18:00 UTC | 14:00 EDT |
| 21:00 UTC | 17:00 EDT |
Related Time Zones
Tools
About EDT (EDT)
EDT (UTC−4) is a standard time zone designation used by United States (eastern states, summer), Canada (Ontario, Quebec, summer). Time zone abbreviations like EDT refer to a specific UTC offset rather than a geographic region — multiple time zones around the world may share the same offset while using different local names.
When scheduling internationally, it is more reliable to refer to a city name or IANA time zone identifier (like America/New_York or Asia/Dubai) than to a short abbreviation, since abbreviations are not globally standardised and can be ambiguous — for example, CST refers to both Central Standard Time (UTC−6) in North America and China Standard Time (UTC+8).
Use the conversion table on this page to see what any UTC hour maps to in EDT, and use the tools below to convert between EDT and any other time zone or city in real time.
UTC Offset vs IANA Time Zone: What's the Difference?
UTC Offset
A UTC offset like UTC+4 or UTC−5 is a simple number expressing how many hours and minutes a location is ahead of or behind Coordinated Universal Time. It is fixed and does not carry any information about DST rules or transitions.
IANA Time Zone
An IANA identifier like Europe/London or Asia/Tokyo is a database entry that includes the full history of UTC offset changes, DST rules, and historical exceptions for that location. IANA identifiers should always be preferred in software and scheduling systems.
Convert EDT Time
EDT — Frequently Asked Questions
EDT is UTC−4, the daylight saving time offset for the eastern US and Canada, active from the second Sunday in March to the first Sunday in November.
EDT begins on the second Sunday in March (clocks spring forward 1 hour at 2:00 AM) and ends on the first Sunday in November (clocks fall back at 2:00 AM).
EDT (UTC−4) is 1 hour ahead of EST (UTC−5). EDT is summer/spring time; EST is winter time.