CET to AST Converter
AST is 5 hours behind CET
CET to AST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in AST
| CET | AST |
|---|---|
| 12:00 AM | 7:00 PM -1d |
| 1:00 AM | 8:00 PM -1d |
| 2:00 AM | 9:00 PM -1d |
| 3:00 AM | 10:00 PM -1d |
| 4:00 AM | 11:00 PM -1d |
| 5:00 AM | 12:00 AM |
| 6:00 AM | 1:00 AM |
| 7:00 AM | 2:00 AM |
| 8:00 AM | 3:00 AM |
| 9:00 AM | 4:00 AM |
| 10:00 AM | 5:00 AM |
| 11:00 AM | 6:00 AM |
| 12:00 PM | 7:00 AM |
| 1:00 PM | 8:00 AM |
| 2:00 PM | 9:00 AM |
| 3:00 PM | 10:00 AM |
| 4:00 PM | 11:00 AM |
| 5:00 PM | 12:00 PM |
| 6:00 PM | 1:00 PM |
| 7:00 PM | 2:00 PM |
| 8:00 PM | 3:00 PM |
| 9:00 PM | 4:00 PM |
| 10:00 PM | 5:00 PM |
| 11:00 PM | 6:00 PM |
Converting Central European Time to Atlantic Standard Time
Central European Time (CET) and Atlantic Standard Time (AST) are separated by a 5 hours time difference. AST is 5 hours behind CET. CET is UTC+1, used in Germany, France, Italy, while AST is UTC-4, used in Canada, Puerto Rico, US Virgin Islands.
When converting from CET to AST, the key reference points to remember are: 9:00 AM CET equals 4:00 AM AST, 12:00 PM noon CET equals 7:00 AM AST, and 5:00 PM CET equals 12:00 PM AST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across CET and AST
For professionals scheduling meetings between CET 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 5 hours 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
CET observes Daylight Saving Time, switching to CEST (UTC+2) 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.