What is the difference between the current timestamp in the GMT time zone and the current timestamp in your local time zone?

Question

This is a sample question i found at ZEND php certificate practice test, the correct answer of this question is: " There is no difference between the current time in any time zone—the current time is an absolute point in time! " This answer is very odd and confusing.I don't understand why this answer is correct, actually I think it depends on the number of hours between the local time zone and GMT. Could anyone help in this?

Answer 1

They must have been referring to the unix timestamp. The unix timestamp is integer representing the number of seconds since the unix epoch -- which is defined as January 1, 1970 at midnight (00:00:00) in the GMT timezone.

So it doesn't matter what timezone you are in -- the unix timestamp is the same in all of them.