pisugar-server invoking `date` with invalid format

[f0o]

pisugar-server[328]: /bin/date: the argument ‘11:31:19’ lacks a leading '+';
pisugar-server[328]: when using an option to specify date(s), any non-option
pisugar-server[328]: argument must be a format string beginning with '+'
pisugar-server[328]: Try '/bin/date --help' for more information.
pisugar-server[328]: hwclock: Cannot access the Hardware Clock via any known method.
pisugar-server[328]: hwclock: Use the --verbose option to see the details of our search for an access method.