savepnpc Timeout Format

Hello all!

I have a backup job that runs for 36 hours and uses savepnpc to shutdown/startup an Oracle database. The problem I'm encountering is getting the "timeout" variable to recognize anything over 24 hours. Below is my savepnpc file. Please note that the pre and post commands do work, however the timeout value does not. Is there anyway to set the timeout variable to more than 24 hours?

type: savepnpc;
precmd: "/u01/local/product/oracle/dba/scripts/db_shut.sh";
pstcmd: "/u01/local/product/oracle/dba/scripts/db_startup.sh";
timeout: "36 hours";

Thanks!