I noticed that string-based DateTime constructor with "%z" in the format specifier throws an exception:
Code to reproduce this issue:
// exception: Error Constructing DateTime: Value not valid date string.
return DateTime("24/07/2025 08:01:47 +0200", "%d/%m/%Y %H:%M:%S %z").toString("%F %T %z");

FlexSim 25.2.0 Beta build 94 and earlier versions.
The specifier works correctly in the DateTime.toString method.