9 AM CET is 3 AM EST.
When it is 9AM in Eastern Standard Time or EST, it would be 3pm in Central European Time or CET. CET is 6 hours ahead of EST or 5 hours ahead of Eastern Daylight Time, or EDT.
If you're referring to the Eastern Standard Time in North America, 04:30 (AM) CET. If you're referring to the Eastern Standard Time in Australia, 13:30 (1:30 PM) CET.
09:00 (9am)
depending on the time of year, either 21.00 Australian Eastern Standard Time or 22.00 Australian Eastern Summer Time
11 AM Central European Time (UTC+1) = 5 AM American Eastern Standard Time (UTC-5) = 8 PM Australian Eastern Standard Time (UTC+10)
When it is 9AM in Eastern Standard Time or EST, it would be 3pm in Central European Time or CET. CET is 6 hours ahead of EST or 5 hours ahead of Eastern Daylight Time, or EDT.
If you're referring to the Eastern Standard Time in North America, 04:30 (AM) CET. If you're referring to the Eastern Standard Time in Australia, 13:30 (1:30 PM) CET.
09:00 (9am)
9am CET
3pm EST is 9pm CET. Central European Time (CET) is 6 hours ahead of Eastern Standard Time (EST).
depending on the time of year, either 21.00 Australian Eastern Standard Time or 22.00 Australian Eastern Summer Time
11 AM Central European Time (UTC+1) = 5 AM American Eastern Standard Time (UTC-5) = 8 PM Australian Eastern Standard Time (UTC+10)
Central European Time (CET) is 7 hours ahead of Eastearn Standard Time (EST) in the US. So if it 8:45 pm in Ohio (the time of this post) it is 2:45 am in CET according to the Greenwich Mean Time website.
CET is Central European Time, which is just east of Greenwich Time (Universal Coordinated Time), so it is one hour later in the CET Zone than in London. By MT I presume you mean Mountain Time, not the state of Montana, most of which is in the Mountain Time Zone anyway, which is 2 zones west of Eastern Time. Eastern Time is 5 zones west of Greenwich, so MT is 8 time zones west of CET. So when it is 10 am CET it is 8 hours earlier in the MT zone, or 2 am. That is assuming both zones are on standard time and not Daylight Savings Time or Summer Time, etc.
9 AM Central European Time (CET) = 9 AM Irish Summer Time (IST) = 10 AM Israel Standard Time (IST) = 1:30 PM India Standard Time (IST)
9 AM EST in Australia = midnight Central European Time 9 AM EST in North America = 3 PM Central European Time
17:00 CET (Central European Time) = 18:00 SAST (South Africa Standard Time)