EST to AST Converter
AST is 1 hour ahead of EST
EST to AST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in AST
| EST | AST |
|---|---|
| 12:00 AM | 1:00 AM |
| 1:00 AM | 2:00 AM |
| 2:00 AM | 3:00 AM |
| 3:00 AM | 4:00 AM |
| 4:00 AM | 5:00 AM |
| 5:00 AM | 6:00 AM |
| 6:00 AM | 7:00 AM |
| 7:00 AM | 8:00 AM |
| 8:00 AM | 9:00 AM |
| 9:00 AM | 10:00 AM |
| 10:00 AM | 11:00 AM |
| 11:00 AM | 12:00 PM |
| 12:00 PM | 1:00 PM |
| 1:00 PM | 2:00 PM |
| 2:00 PM | 3:00 PM |
| 3:00 PM | 4:00 PM |
| 4:00 PM | 5:00 PM |
| 5:00 PM | 6:00 PM |
| 6:00 PM | 7:00 PM |
| 7:00 PM | 8:00 PM |
| 8:00 PM | 9:00 PM |
| 9:00 PM | 10:00 PM |
| 10:00 PM | 11:00 PM |
| 11:00 PM | 12:00 AM +1d |
Converting Eastern Standard Time to Atlantic Standard Time
Eastern Standard Time (EST) and Atlantic Standard Time (AST) are separated by a 1 hour time difference. AST is 1 hour ahead of EST. EST is UTC-5, used in United States, Canada, Jamaica, while AST is UTC-4, used in Canada, Puerto Rico, US Virgin Islands.
When converting from EST to AST, the key reference points to remember are: 9:00 AM EST equals 10:00 AM AST, 12:00 PM noon EST equals 1:00 PM AST, and 5:00 PM EST equals 6:00 PM AST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across EST and AST
For professionals scheduling meetings between EST and AST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 1 hour difference, the window of overlap may be limited. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
EST observes Daylight Saving Time, switching to EDT (UTC-4) during summer months. AST observes DST, switching to ADT (UTC-3). During DST transitions, the time difference between these zones may temporarily change by 1 hour. Always verify the current offset during spring and fall transition periods.