According to Clock, Pavlovia timestamps should follow this format 'YYYY-MM-DD_HH[h]mm.ss.sss'. However, this isn't always the case.
For example, in a single experiment (ongoing since July 2022) i received the following datetime formats for different participants. Results were downloaded as CSV files, if it matters.
- %Y-%m-%d_%Hh%M.%S.%f (the specified format)
- %m-%d-%Y_%Hh%M.%S.%f
- %Y_%b_%d_%H%M
- %Y-%m-%d_%Hh%M.%S
- %m-%d-%Y_%Hh.%S.%f