Is your perception time is always the same?

Do you mean, perhaps, "perception of time"?

For a psychologist perception means the arrival of a neural signal at the cortex. You might argue then that "perception time" means something like how long it takes your brain to know you've stubbed your toe. The clock starts when rock meets toe and stops when pain meets brain. Transmission times in nerve vary, not just because your eyes are closer to your head than are your toes, but also, because of the kind of nerve fibers involved.

In the other sense of your question, the perception of time, and in particular the rapidity of time's passage, is quite variable. Fever, drugs (licit and otherwise), adventure, sleepiness, emotion, can all but annihilate or sense of time passing.

It is common knowledge that there is nothing longer than a hour waiting, nothing shorter than an afternoon with a friend.