$HOME/.bashrc provides TZ for *all* processes, resulting in proper date for Build_Log.log_date in remote_build_history via ssh (see also fe8f8f88a1d7);
--- a/Admin/cronjob/main Fri Nov 11 17:23:26 2016 +0100
+++ b/Admin/cronjob/main Fri Nov 11 21:06:15 2016 +0100
@@ -9,4 +9,4 @@
export ISABELLE_IDENTIFIER="cronjob"
"$THIS/../build" jars_fresh || exit $?
-exec "$THIS/../../bin/isabelle_java" "-Duser.timezone=Europe/Berlin" isabelle.Isabelle_Cronjob "$@"
+exec "$THIS/../../bin/isabelle_java" isabelle.Isabelle_Cronjob "$@"