I want to be sure that if I commit something in subversion from one machine and I checkout on another I will get the same value for datetime/timestamp.
Currently I observed that the file datetime is from the comment when I did the sync instead of the original value.
For me it doesn't make any sense to know when the files were synced - I just want to see the last commit time.
This issue is not timezone related.
If you are using TortoiseSVN, there is an option. TortoiseSVN -> Settings -> General -> "Set file dates to the 'last commit time'".
Subversion doesn't preserve the original timestamp of the file.
If you absolutely need to preserve the timestamp, you have to do it yourself. For example, you could store the original timestamp as a subversion property.
You can set it in .subversion/config:
[miscellany]
use-commit-times = yes
Although you will have strange side effects if we are talking about source files.
For example - you build your software and do svn update, now the timestamp of the updated files is older then the timestamp of the build result file and it won't be rebuilt even though source files changed. Be very careful with this setting.