It does seem counterintuitive, but this behavior appears to be by-design. See here for a similar issue: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=301972
Feb. 30th is an invalid date which `date` doesn't want to return, which is why it's bumping the result into March. ** Bug watch added: Debian Bug tracker #301972 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=301972 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/710368 Title: /bin/date --date='next month' is wrong -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs