Time and we further

As we in our current knowledge of science assume that time started after big bang( I am agreeable with big bang theory only that it is cyclical and time and again it starts as big bang and collects as big crunch. ) But I personally think that time never comes in cyclical terms as big bang and big crunch but it always remain there as i.e. Electric train passes through same route millions of time but the over head wire remains stationery ,just like that time always remains stable and big bang to big crunch cosmos passes through it ,

There can be no creations ,only changes happens,so if you say time started after ,big bang ,personally i don't believe in that because every thing can have a change but ,time can not change in any other form so I think ,time remains there after big crunch also and after big bang ,again every thing starts passing through time.

The imagination of time travel is also ,giving us the same feel that time is stable And if we want to travel in past ,before latest big bang at the time of singularity , is only possible because time is stable and we can travel through it.