AEST to CDT Time Converter
Central Daylight Time (CDT) is currently 15 hours behind Australian Eastern Standard Time (AEST). AEST is UTC+10 and CDT is UTC-5. The table below converts every hour of the day between the two, and the call planner shows where working hours line up.
Best Time for a Call
Both sides are inside 9:00 AM to 5:00 PM office hours between 9:00 AM and 5:00 PM in AEST, which is 9:00 AM to 5:00 PM in CDT.
Comparing more than two places? The Overlap Zones tool shows working hours for several cities on one grid.
Hour by Hour: AEST to CDT
Rows marked office hours fall between 9:00 AM and 5:00 PM in both places. For a specific date, use the interactive converter.
Does the Difference Change During the Year?
AEST and CDT are fixed offsets, so the difference between them never changes.
AEST is UTC+10. Sydney and Melbourne switch to AEDT (UTC+11) from October to April, while Brisbane stays on AEST year round.
CDT is UTC-5, the summer counterpart of CST. Central North America uses it from March to November.
Frequently Asked Questions
How many hours behind is CDT compared to AEST?
CDT is currently 15 hours behind AEST. AEST and CDT are fixed offsets, so the difference between them never changes.
What time is 9:00 AM in AEST in CDT?
9:00 AM in AEST is 6:00 PM in CDT on the previous day.
What is the best time for a call between AEST and CDT?
Both sides are inside 9:00 AM to 5:00 PM office hours between 9:00 AM and 5:00 PM in AEST, which is 9:00 AM to 5:00 PM in CDT.