At the end of (every) *.out file simfactory currently outputs:

Mon Jan 20 09:34:59 CST 2020
Simfactory Done at date: 0

where the first is the date as produced by the date command and the 0 in the second line is date's exit code. This is due to this Python code

display("Simfactory Done at date: %s" % simenv.system("date")) # This is wrong because system doesn't return the command output

(comment present in source code).

Pull request https://bitbucket.org/simfactory/simfactory2/pull-requests/44/fix-incorrect-use-of-system-date fixes this.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2458/correct-date-in-in-simfactory-done-message