Timestamp format

We're using linux timestamp format, but our partners often use Windows and it's causing them problems. They asked that we not hardcode that and allow the user to change the timestamp format in the config file.

Start by locating the current Linux timestamp formatting and the configuration file loading path; no specific files or tests are named in the issue. Trace where timestamps are produced, then determine how a user-selectable format can be configured and verify that both the existing format and a Windows-compatible format work as intended.

Written by the indexing model from the issue text.