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Convert Greenwich Mean Time (GMT) to Eastern Daylight Time (EDT, UTC-4) for regional business calls. Free converter with real-time conversion, meeting time planner, and business hours comparison for GMT to EDT coordination. Includes 24-hour conversion table and live time displays. Perfect for international scheduling and global team collaboration. Works on all devices with accurate, reliable results.
Eastern Daylight Time is 4 hours behind Greenwich Mean Time
Complete hourly conversion for Greenwich Mean Time to Eastern Daylight Time
| Greenwich Mean Time | Eastern Daylight Time | 24-Hour GMT | 24-Hour EDT |
|---|---|---|---|
| 12:00 AM | 8:00 PM (previous day) | 00:00 | 20:00 |
| 1:00 AM | 9:00 PM (previous day) | 01:00 | 21:00 |
| 2:00 AM | 10:00 PM (previous day) | 02:00 | 22:00 |
| 3:00 AM | 11:00 PM (previous day) | 03:00 | 23:00 |
| 4:00 AM | 12:00 AM | 04:00 | 00:00 |
| 5:00 AM | 1:00 AM | 05:00 | 01:00 |
| 6:00 AM | 2:00 AM | 06:00 | 02:00 |
| 7:00 AM | 3:00 AM | 07:00 | 03:00 |
| 8:00 AM | 4:00 AM | 08:00 | 04:00 |
| 9:00 AM | 5:00 AM | 09:00 | 05:00 |
| 10:00 AM | 6:00 AM | 10:00 | 06:00 |
| 11:00 AM | 7:00 AM | 11:00 | 07:00 |
| 12:00 PM | 8:00 AM | 12:00 | 08:00 |
| 1:00 PM | 9:00 AM | 13:00 | 09:00 |
| 2:00 PM | 10:00 AM | 14:00 | 10:00 |
| 3:00 PM | 11:00 AM | 15:00 | 11:00 |
| 4:00 PM | 12:00 PM | 16:00 | 12:00 |
| 5:00 PM | 1:00 PM | 17:00 | 13:00 |
| 6:00 PM | 2:00 PM | 18:00 | 14:00 |
| 7:00 PM | 3:00 PM | 19:00 | 15:00 |
| 8:00 PM | 4:00 PM | 20:00 | 16:00 |
| 9:00 PM | 5:00 PM | 21:00 | 17:00 |
| 10:00 PM | 6:00 PM | 22:00 | 18:00 |
| 11:00 PM | 7:00 PM | 23:00 | 19:00 |
Optimal hours for calls between GMT and EDT
Based on standard business hours (9:00 AM - 6:00 PM) in each time zone
Technical information for both time zones
Source timezone
Target timezone
Greenwich Mean Time (GMT) is 4 hours ahead of Eastern Daylight Time (EDT). You must subtract 4 hours from the GMT to convert GMT to EDT. For example, if it is noon GMT, it will be 8:00 AM EDT.
Yes, daylight saving time directly impacts this conversion. EDT is observed during the summer months (from the second Sunday in March to the first Sunday in November), while GMT remains constant throughout the year. Therefore, when converting from GMT to EDT, you consistently subtract 4 hours during daylight saving time.
To manually convert GMT to EDT, take your GMT and subtract 4 hours. For instance: If it’s 8:00 AM in GMT, subtracting 4 hours gives you 4:00 AM in EDT. This method can be applied at any hour of the day.
Here are a few examples: If it’s 6:00 PM in GMT, it will be 2:00 PM in EDT. If it’s 3:00 AM in GMT, it will be 11:00 PM in EDT (the previous day). To manually convert, subtract 4 hours from your current GMT.
When planning meetings between participants in GMT and EDT, be mindful of the 4-hour difference. It’s advisable to schedule meetings during overlapping business hours; for example, if it’s convenient for participants in GMT from 9:00 AM to 5:00 PM, this translates to 5:00 AM to 1:00 PM in EDT. This ensures that all parties can attend without conflicts.
Yes, many online tools allow for batch conversions from GMT to EDT. This feature is handy for scheduling meetings or events that involve participants across different time zones.
