EST — Eastern Standard Time
US East Coast standard time (UTC-5), EDT in summer.
EST stands for Eastern Standard Time. US East Coast standard time (UTC-5), EDT in summer.
EST is UTC-05:00 from Coordinated Universal Time (UTC). The primary IANA zone is America/New_York.
EST is the standard-time abbreviation; it shifts to EDT (UTC-04:00) during daylight saving time.
Standard / daylight pair
EDT · UTC−4 — March–November in the US and Canada
Where this abbreviation is used
| Meaning | Offset | Region |
|---|---|---|
| Eastern Standard Time (North America) | UTC−5 | United States, Canada, Mexico, and the Caribbean |
| Eastern Standard Time (Australia) | UTC+10 | Queensland, New South Wales, Victoria, Tasmania, and the Australian Capital Territory |
Countries using this zone
- United States
- Canada
- Mexico
- Bahamas
- Jamaica
- Haiti
- Panama
- Cayman Islands
- Turks and Caicos
Principal cities
- New York City
- Toronto
- Miami
- Washington D.C.
- Montreal
- Atlanta
- Panama City
- Kingston
History
Standard time zones were formally adopted by North American railroads in November 1883 to replace a confusing array of local solar times. The United States government later codified these zones through the Standard Time Act of 1918. Recent shifts include the permanent adoption of the UTC−5 offset by the Mexican state of Quintana Roo to better align with the tourism needs of the Riviera Maya.
Frequently Asked Questions
EST — Eastern Standard Time. US East Coast standard time (UTC-5), EDT in summer.
EST is UTC-05:00. It is paired with EDT (UTC-04:00).
Countries and territories primarily using EST include: US, CA.
Yes. Zones using EST shift to EDT (UTC-04:00) during daylight saving time and return to EST when DST ends.
EST is the winter (standard) abbreviation and EDT is the summer (daylight-saving) abbreviation. EDT is one hour ahead of EST.
The primary IANA time zone representing EST is America/New_York. Operating systems and programming libraries use this identifier to resolve local time.
Eastern Standard Time (EST) is the standard offset of UTC−5, whereas Eastern Daylight Time (EDT) is UTC−4. In most of the United States and Canada, EST is used during the winter months. Clocks are advanced by 1 hour to EDT in the spring to provide more daylight during summer evenings.
Several regions maintain the UTC−5 offset year-round without seasonal changes. These include Panama, Jamaica, the Cayman Islands, and the Mexican state of Quintana Roo. By staying on a fixed schedule, these areas provide consistency for local businesses and the international tourism industry. This prevents the biannual disruption associated with changing clocks.
For regions using seasonal adjustments, the transition occurs twice a year. Clocks move forward 1 hour on the second Sunday of March at two in the morning. They move back 1 hour on the first Sunday of November at two in the morning. This cycle is standard across the majority of the Eastern United States and Canada.
No, New York City only uses EST during the winter months. In the spring, the city transitions to Eastern Daylight Time (EDT) to maximize evening light. Since New York is a major global financial hub, its local time transitions are closely monitored by international markets to ensure continuous financial operations.
To find the current time in EST, subtract 5 hours from Coordinated Universal Time (UTC). For example, if it is noon UTC, it is seven in the morning in the EST zone. This 5-hour difference remains constant for standard time periods, though it changes to 4 hours during the periods when daylight saving is active.