File timestamps on different OSes

Question

Are file timestamps (Created/birth, accessed and modified) the same on different OSes? Particularly on Windows and Linux.

I downloaded a file which is modified on Windows and its timestamps looked right on my Linux system with ext4.

Let's say I modified a file on a NTFS filesystem mounted on Linux.
Or I copied it to my ext4 partition, modified it (or accessed it) and put it back (for modified and/or accessed).
Or I created a file on ext4 and put it to a NTFS partition (for birth).

Will they look right on Windows?

I use Windows and Linux together and I want to keep timestamps same.

ctime is traditionally the last change time, not creation time. various filesystems may or may not have extensions to also store the birth time — thrig, Aug 26 '22 at 01:36
@jordanm it does, but [it has been made accessible only fairly recently](https://unix.stackexchange.com/a/407305/70524). — muru, Aug 26 '22 at 01:59

score 1 · Answer 1 · answered Aug 26 '22 at 05:28

Linux utilities, aside from star, cannot copy the birth/creation time but star does that only for files extracted/restored from .tar archives, so basically we have none.

Please refer to this question for more info: Copying or restoring crtime for files/directories on ext4fs filesystem

File timestamps on different OSes

1 Answers1