That is not a "weird time format" at all, they appear to be quite normal ISO 8601 timestamps:
ISO 8601 date formats are preferred for any situtuation where it is required to write dates that will be universally understood (e.g. data collection, filenames, data exchange, internet protocols, documentation, published articles, etc). Their ability to be sorted into chronological order with a basic character-sort makes them much more convenient to work with than any other date formats.
