3pm EST is 9pm CET. Central European Time (CET) is 6 hours ahead of Eastern Standard Time (EST).
All of them. 3PM is 24 hours later than 3PM. However, without a frame of reference (a date) all of them could also be regarded as being earlier than 3PM. That is, 9PM last night would be earlier than 3PM today.
9am-3pm, 9pm-3am. The other hours is low tide.
3pm to 10pm is 7 hours.
24 hours
13
12 hours.
3 hours between 12pm and 3pm
4to 9pm is how much hours
Between 10am and 9pm, there are 11 hours.
24 of course !
There are 17 hours between 9pm and 2pm the following day.