LastUpdate DateTime Format

Hi,
I want to know datetime format,
is it GMT/UTC or else.?

I want to convert into CST, how can I extract Time into CST Time zone datetime format. ?

timeformat.PNG

The “LastUpdate” metadata is UTC, as can be seen in the source code:
https://hg.orthanc-server.com/orthanc/file/Orthanc-1.9.3/OrthancServer/Sources/Database/StatelessDatabaseOperations.cpp#l3136

How to convert from UTC to CST depends on the programming language you use.

Sébastien-