11pm in Cook Islands Standard Time is 7pm in Australian Eastern Standard Time on the next day.

Frequently asked

Quick answers about converting between Cook Islands Standard Time and Australian Eastern Standard Time. Can't find what you need? Email [email protected].

What is the time difference between Cook Islands Standard Time and Australian Eastern Standard Time?

Cook Islands Standard Time is 20 hours behind Australian Eastern Standard Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.

When it's 11pm in Cook Islands Standard Time, what time is it in Australian Eastern Standard Time?

11pm in Cook Islands Standard Time is 7pm in Australian Eastern Standard Time on the next day. That's already evening in Australian Eastern Standard Time, after the typical working day ends. Use the hour-by-hour table above to read any other time across.

What's the best time for a call between Cook Islands Standard Time and Australian Eastern Standard Time?

1pm–5pm in Cook Islands Standard Time lines up with 9am–1pm in Australian Eastern Standard Time the next day — both sides are inside a 9-to-5 working day.

Does this account for daylight saving time?

Yes. We track every clock change in both places, so the abbreviations you see — -10:00 and AEST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.

Why is the date sometimes different on each side?

When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.