The following does work as expected:
date +\'%d-%b-%Y-%H-%M\' 28-Sep-2009-14-28
But none of the following 4 entries from crontab are working.
* *
As long as there are no spaces in the format string supplied as an argument to date, you should not need the ticks at all.
date +%d-%b-%Y-%H-%M
should work.