When it is 12:00 PM in Boulder, it is 4:00 AM the next day in AEST.
📞There is no overlap during standard 9-to-5 business hours, so a call may need to be early or late in the day for one side.
Boulder is 16 hours behind AEST.
🕐 Add 16 hours to Boulder time to get AEST time.
Boulder uses 6 hours behind Universal Time (UTC-6) and AEST uses 10 hours ahead of Universal Time (UTC+1).
| Boulder Time | AEST Time | |
|---|---|---|
| 12 AM Boulder Time | ↔ | 4 PM AEST Time |
| 1 AM Boulder Time | ↔ | 5 PM AEST Time |
| 2 AM Boulder Time | ↔ | 6 PM AEST Time |
| 3 AM Boulder Time | ↔ | 7 PM AEST Time |
| 4 AM Boulder Time | ↔ | 8 PM AEST Time |
| 5 AM Boulder Time | ↔ | 9 PM AEST Time |
| 6 AM Boulder Time | ↔ | 10 PM AEST Time |
| 7 AM Boulder Time | ↔ | 11 PM AEST Time |
| 8 AM Boulder Time | ↔ | 12 AM AEST Time |
| 9 AM Boulder Time | ↔ | 1 AM AEST Time |
| 10 AM Boulder Time | ↔ | 2 AM AEST Time |
| 11 AM Boulder Time | ↔ | 3 AM AEST Time |
| Boulder Time | AEST Time | |
|---|---|---|
| 12 PM Boulder Time | ↔ | 4 AM AEST Time |
| 1 PM Boulder Time | ↔ | 5 AM AEST Time |
| 2 PM Boulder Time | ↔ | 6 AM AEST Time |
| 3 PM Boulder Time | ↔ | 7 AM AEST Time |
| 4 PM Boulder Time | ↔ | 8 AM AEST Time |
| 5 PM Boulder Time | ↔ | 9 AM AEST Time |
| 6 PM Boulder Time | ↔ | 10 AM AEST Time |
| 7 PM Boulder Time | ↔ | 11 AM AEST Time |
| 8 PM Boulder Time | ↔ | 12 PM AEST Time |
| 9 PM Boulder Time | ↔ | 1 PM AEST Time |
| 10 PM Boulder Time | ↔ | 2 PM AEST Time |
| 11 PM Boulder Time | ↔ | 3 PM AEST Time |
Boulder is 16 hours behind AEST.
Boulder is behind AEST by 16 hours.
It is 1:00 AM the next day in AEST.